All Classes

Class	Description
AberrationModifier	Class modifying theoretical angular measurement with (the inverse of) stellar aberration.
AbsoluteDate	This class represents a specific instant in time.
AbsolutePVCoordinates	Position - Velocity - Acceleration linked to a date and a frame.
AbsolutePVCoordinatesHermiteInterpolator	Class using a Hermite interpolator to interpolate absolute position-velocity-acceleration coordinates.
AbstractAlfriend1999	Abstract class for Alfriend1999 normal and maximised methods as they share lots of similarities.
AbstractAlmanac	Base class for GNSS almanacs.
AbstractAmbiguityModifier	Deprecated. as of 12.1 ambiguity is managed directly by raw measurements Phase, OneWayGNSSPhase and InterSatellitesPhase
AbstractAnalyticalGradientConverter	Converter for analytical orbit propagator.
AbstractAnalyticalMatricesHarvester	Base class harvester between two-dimensional Jacobian matrices and analytical orbit propagator.
AbstractAnalyticalPropagator	Common handling of Propagator methods for analytical propagators.
AbstractAveragedOrbitalState	Abstract class representing averaged orbital state.
AbstractBatchLSModel	Bridge between measurements and least squares problems.
AbstractBodyAttraction	Abstract class for body attraction force model.
AbstractBuilder<T extends AbstractBuilder<T>>	Abstract builder for all CCSDS Message files parsers/writers.
AbstractChaoMappingFunction	Chao mapping function for radio wavelengths.
AbstractConstantThrustPropulsionModel	This abstract class simply serve as a container for a constant thrust maneuver.
AbstractConstituentParser<H extends Header,T extends NdmConstituent<H,?>,P extends AbstractConstituentParser<H,T,?>>	Parser for CCSDS messages.
AbstractCovarianceMatrixProvider	Abstract provider handling a predefined initial covariance matrix.
AbstractCycleSlipDetector	Base class for cycle-slip detectors.
AbstractDetector<T extends AbstractDetector<T>>	Common parts shared by several orbital events finders.
AbstractDragForceModel	Base class for drag force models.
AbstractDualFrequencyCombination	Base class for dual frequency combination of measurements.
AbstractEncodedMessage	Encoded messages as a sequence of bytes.
AbstractEncounterLOF	Abstract class for encounter frame between two objects.
AbstractEopLoader	Base class for EOP loaders.
AbstractEphemerisMessage	Base class for ephemeris-based navigation messages.
AbstractFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Abstract class for FieldODEIntegratorBuilder.
AbstractFieldOfView	Abstract class representing a spacecraft sensor Field Of View.
AbstractFieldOrbitInterpolator<KK extends CalculusFieldElement<KK>>	Abstract class for orbit interpolator.
AbstractFieldTimeInterpolator<T extends FieldTimeStamped<KK>,KK extends CalculusFieldElement<KK>>	Abstract class for time interpolator.
AbstractFixedStepFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Abstract class for integrator builder using fixed step size.
AbstractFrames	This class is an implementation of Frames that creates frames when they are first used and uses synchronization to ensure that each frame is only created once.
AbstractGaussianContribution	Common handling of DSSTForceModel methods for Gaussian contributions to DSST propagation.
AbstractGaussianContribution.FieldGaussianShortPeriodicCoefficients<T extends CalculusFieldElement<T>>	This class handles the short periodic coefficients described in Danielson 2.5.3-26.
AbstractGaussianContribution.FieldSlot<T extends CalculusFieldElement<T>>	Coefficients valid for one time slot.
AbstractGaussianContribution.FieldUijVijCoefficients<T extends CalculusFieldElement<T>>	The Uij and Vij coefficients described by equations 2.5.3-(21) and 2.5.3-(22) from Danielson.
AbstractGaussianContribution.GaussianShortPeriodicCoefficients	This class handles the short periodic coefficients described in Danielson 2.5.3-26.
AbstractGaussianContribution.GaussQuadrature	Class used to integrate a function of the orbital elements using the Gaussian quadrature rule to get the acceleration.
AbstractGaussianContribution.Slot	Coefficients valid for one time slot.
AbstractGaussianContribution.UijVijCoefficients	The Uij and Vij coefficients described by equations 2.5.3-(21) and 2.5.3-(22) from Danielson.
AbstractGaussianContributionContext	This class is a container for the common parameters used in AbstractGaussianContribution.
AbstractGenerator	Base class for both Key-Value Notation and eXtended Markup Language generators for CCSDS messages.
AbstractGlobalPressureTemperature	Base class for Global Pressure and Temperature 2, 2w and 3 models.
AbstractGradientConverter	Converter for states and parameters arrays.
AbstractIntegratedPropagator	Common handling of Propagator methods for both numerical and semi-analytical propagators.
AbstractIntegratedPropagator.MainStateEquations	Differential equations for the main state (orbit, attitude and mass).
AbstractInterSatellitesMeasurement<T extends ObservedMeasurement<T>>	Base class for measurement between two satellites that are both estimated.
AbstractKalmanEstimator	Base class for Kalman estimators.
AbstractLambdaMethod	Base class for decorrelation/reduction engine for LAMBDA type methods.
AbstractLightFluxModel	Abstract class for light flux models.
AbstractLimitedVariableStepFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Abstract class for integrator using a limited number of variable steps.
AbstractListCrawler<T>	Provider for data files defined in a list.
AbstractManeuverTriggers	Base class for triggers.
AbstractMatricesHarvester	Base harvester between two-dimensional Jacobian matrices and one-dimensional additional state arrays.
AbstractMeasurement<T extends ObservedMeasurement<T>>	Abstract class handling measurements boilerplate.
AbstractMeasurementBuilder<T extends ObservedMeasurement<T>>	Base class for measurements builders.
AbstractMessageParser<T>	Parser for CCSDS messages.
AbstractMessageWriter<H extends Header,S extends Segment<?,?>,F extends NdmConstituent<H,S>>	Base class for Navigation Data Message (NDM) files.
AbstractMultipleShooting	Multiple shooting method using only constraints on state vectors of patch points (and possibly on epoch and integration time).
AbstractNavigationMessage	Base class for GNSS navigation messages.
AbstractOnBoardMeasurement<T extends ObservedMeasurement<T>>	Base class modeling a measurement where receiver is a satellite.
AbstractOneWayGNSSMeasurement<T extends ObservedMeasurement<T>>	Base class for one-way GNSS measurement.
AbstractOrbitInterpolator	Abstract class for orbit interpolator.
AbstractPropagator	Common handling of Propagator methods for analytical propagators.
AbstractPropagatorBuilder	Base class for propagator builders.
AbstractPropagatorConverter	Common handling of PropagatorConverter methods for propagators conversions.
AbstractRadiationForceModel	Base class for radiation force models.
AbstractRelativisticClockModifier	Class modifying theoretical measurements with relativistic clock correction.
AbstractRelativisticClockOnBoardRangeRateModifier<T extends ObservedMeasurement<T>>	Class modifying theoretical range-rate measurement with relativistic frequency deviation.
AbstractRelativisticJ2ClockModifier	Class modifying theoretical measurements with relativistic J2 clock correction.
AbstractScheduler<T extends ObservedMeasurement<T>>	Base implementation of Scheduler managing dates selection.
AbstractSelfFeedingLoader	Abstract class that combines a DataProvidersManager with a supported names regular expression for DataProvidersManager.feed(String, DataLoader).
AbstractShapiroBaseModifier	Class modifying theoretical range measurement with Shapiro time delay.
AbstractShortTermEncounter1DNumerical2DPOCMethod	This abstract class serves as a foundation to create 1D numerical 2D probability of collision computing method.
AbstractShortTermEncounter2DPOCMethod	This abstract class serves as a foundation to create 2D probability of collision computing method assuming a short term encounter model.
AbstractSingleFrequencyCombination	Base class for single frequency combination of measurements.
AbstractSolarActivityData<L extends AbstractSolarActivityDataLoader.LineParameters,D extends AbstractSolarActivityDataLoader<L>>	Abstract class for solar activity data.
AbstractSolarActivityDataLoader<L extends AbstractSolarActivityDataLoader.LineParameters>	Abstract class for solar activity data loader.
AbstractSolarActivityDataLoader.LineParameters	Container class for Solar activity indexes.
AbstractStateCovarianceInterpolator	Abstract class for orbit and state covariance interpolator.
AbstractStateModifier	Abstract base class for modifying state during propagation.
AbstractTimeInterpolator<T extends TimeStamped>	Abstract class for time interpolator.
AbstractTimeScales	Abstract base class for TimeScales that implements some common functionality.
AbstractVariableStepFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Abstract class for integrator builder using variable step size.
AbstractVienna	The Vienna tropospheric delay model for radio techniques.
AbstractWindUp<T extends ObservedMeasurement<T>>	Base class for wind-up effect computation.
AbstractWriter	Top level class for writing CCSDS message sections.
AccelerationModel	Acceleration model used by empirical force.
AccuracyProvider	This interface represents an accuracy providerused to validate RTCM ephemeris messages.
AccurateFormatter	Formatter used to produce strings from data with high accuracy.
Acm	This class gathers the informations present in the Attitude Comprehensive Message (ACM).
AcmData	Data container for Attitude Comprehensive Messages.
AcmDataSubStructureKey	Keywords for ACM data sub-structure.
AcmElements	Data elements types used in CCSDS Attitude Comprehensive Messages.
AcmMetadata	Meta-data for Attitude Comprehensive Message.
AcmMetadataKey	Keys for ACM container entries.
AcmParser	A parser for the CCSDS ACM (Attitude Comprehensive Message).
AcmSatelliteEphemeris	ACM ephemeris blocks for a single satellite.
AcmWriter	Writer for CCSDS Attitude Comprehensive Message.
AdamsBashforthFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for AdamsBashforthFieldIntegrator.
AdamsBashforthIntegratorBuilder	Builder for AdamsBashforthIntegrator.
AdamsMoultonFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for AdamsMoultonFieldIntegrator.
AdamsMoultonIntegratorBuilder	Builder for AdamsMoultonIntegrator.
AdaptableInterval	This interface represents an event checking interval that depends on state.
AdapterDetector	Base class for adapting an existing detector.
AdapterPropagator	Orbit propagator that adapts an underlying propagator, adding differential effects.
AdapterPropagator.DifferentialEffect	Interface for orbit differential effects.
AdditionalCovarianceMetadata	Container for the additional covariance metadata (optional).
AdditionalCovarianceMetadataKey	Keys for covariance metadatail y a entries.
AdditionalDerivativesProvider	Provider for additional derivatives.
AdditionalParameters	Container for additional parameters data block.
AdditionalParametersKey	Keys for CDM additional parameters entries.
AdditionalParametersWriter	Writer for additional parameters data block for CCSDS Conjunction Data Messages.
AdditionalStateProvider	This interface allows to modify SpacecraftState and set up additional state data.
AdmCommonMetadataKey	Keys for APM and AEM entries.
AdmCommonMetadataWriter	Writer for Common metadata for CCSDS Attitude Parameter/Ephemeris Messages.
AdMethodType	Type of attitude determination method used in CCSDS Attitude Comprehensive Messages.
AdmHeader	Header of a CCSDS Attitude Data Message.
AdmMetadata	This class gathers the meta-data present in the Attitude Data Message (ADM).
AdmMetadataKey	Keys for ADM container entries.
AdmParser<T extends NdmConstituent<AdmHeader,?>,P extends AbstractConstituentParser<AdmHeader,T,?>>	Base class for Attitude Data Message parsers.
Aem	This class stores all the information of the Attitude Ephemeris Message (AEM) File parsed by AEMParser.
AemData	The Attitude Ephemerides data blocks class contain list of attitude data points.
AemMetadata	This class gathers the meta-data present in the Attitude Data Message (ADM).
AemMetadataKey	Keys for AEM container entries.
AemParser	A parser for the CCSDS AEM (Attitude Ephemeris Message).
AemSatelliteEphemeris	AEM ephemeris blocks for a single satellite.
AemSegment	This class stores the metadata and data for one attitude segment.
AemWriter	A writer for Attitude Ephemeris Messsage (AEM) files.
AggregateBoundedAttitudeProvider	A BoundedAttitudeProvider that covers a larger time span from several constituent attitude providers that cover shorter time spans.
AggregateBoundedPropagator	A BoundedPropagator that covers a larger time span from several constituent propagators that cover shorter time spans.
AggregatedClockModel	Offset clock model aggregating several other clock models.
AggregatedPVCoordinatesProvider	Aggreate multiple PVCoordinatesProvider instances together This can be used to describe an aircraft or surface vehicle.
AggregatedPVCoordinatesProvider.Builder	Builder class for AggregatedPVCoordinatesProvider.
AggregatedPVCoordinatesProvider.InvalidPVProvider	Implementation of PVCoordinatesProvider that throws an illegal state exception.
AGILeapSecondFilesLoader	Loader for UTC-TAI extracted from LeapSecond file from AGI.
AGILeapSecondFilesLoader.Parser	Internal class performing the parsing.
Alfano2005	Compute the probability of collision using the method described in :"S.
Alfriend1999	Compute the probability of collision using the method described in : "Kyle Alfriend, Maruthi Akella, Joseph Frisbee, James Foster, Deok-Jin Lee, and Matthew Wilkins.
Alfriend1999Max	Compute the probability of collision assuming the worst case described in : "Kyle Alfriend, Maruthi Akella, Joseph Frisbee, James Foster, Deok-Jin Lee, and Matthew Wilkins.
AlignmentDetector	Finder for satellite/body alignment events in orbital plane.
AlongTrackAiming	Class used to orient tiles along an orbit track.
AltCovarianceType	Flag indicating the type of alternate covariance information provided.
AltitudeDetector	Finder for satellite altitude crossing events.
AmbiguityAcceptance	Interface defining ambiguity acceptance tests.
AmbiguityCache	Cache for AmbiguityDriver.
AmbiguityDriver	Specialized ParameterDriver for ambiguity.
AmbiguitySolver	Class for solving integer ambiguity problems.
AngleType	Antenna geometry represented in the angle date.
AngularAzEl	Class modeling an Azimuth-Elevation measurement from a ground station.
AngularAzElBuilder	Builder for AngularAzEl measurements.
AngularCoordinates	Simple container for rotation/rotation rate/rotation acceleration triplets.
AngularDerivativesFilter	Enumerate for selecting which derivatives to use in TimeStampedAngularCoordinates and TimeStampedFieldAngularCoordinates interpolation.
AngularIonosphericDelayModifier	Class modifying theoretical angular measurement with ionospheric delay.
AngularRaDec	Class modeling a Right Ascension - Declination measurement from a ground point (station, telescope).
AngularRaDecBuilder	Builder for AngularRaDec measurements.
AngularRadioRefractionModifier	Class modifying theoretical angular measurement with ionospheric radio refractive index.
AngularSeparationDetector	Detects when spacecraft comes close to a moving beacon, as seen from a moving observer.
AngularSeparationFromSatelliteDetector	Detects when two moving objects come close to each other, as seen from spacecraft.
AngularTroposphericDelayModifier	Deprecated. as of 12.1, AngularRadioRefractionModifier shall be used to handle tropospheric effect on angular measurements
AngularVelocity	Container for Attitude Parameter Message data lines.
AngularVelocityKey	Keys for APM angular velocity entries.
Antenna	GNSS antenna model.
AntexLoader	Factory for GNSS antennas (both receiver and satellite).
Apm	This class stores all the information of the Attitude Parameter Message (APM) File parsed by APMParser.
ApmData	Container for Attitude Parameter Message data.
ApmParser	A parser for the CCSDS APM (Attitude Parameter Message).
ApmQuaternion	Container for Attitude Parameter Message quaternion logical block.
ApmQuaternionKey	Keys for APM quaternion entries.
ApmWriter	Writer for CCSDS Orbit Parameter Message.
AppliedDCBS	Corrections of Differential Code Biases (DCBs) applied.
AppliedPCVS	Corrections of antenna phase center variations (PCVs) applied.
ApsideDetectionAdaptableIntervalFactory	Factory class for AdaptableInterval suitable for apside detection on eccentric orbits.
ApsideDetector	Finder for apside crossing events.
AskneNordiusModel	The Askne Nordius model.
AstronomicalAmplitudeReader	Parser for tides astronomical amplitude Hf.
Atmosphere	Interface for atmospheric models.
AtmosphericRefractionModel	Defines an refraction model that can be used to correct for the apparent position of an object due to atmospheric effects.
Attitude	This class handles attitude definition at a given date.
AttitudeBuilder	This interface represents a builder for attitude.
AttitudeCovariance	Covariance entry.
AttitudeCovarianceHistory	Covariance history.
AttitudeCovarianceHistoryMetadata	Metadata for covariance history.
AttitudeCovarianceHistoryMetadataKey	Keys for covariance history container entries.
AttitudeCovarianceType	Attitude covariance set type used in CCSDS Attitude Comprehensive Messages.
AttitudeDetermination	Attitude determination data.
AttitudeDeterminationKey	Keys for attitude determination data entries.
AttitudeDeterminationSensor	Attitude determination sensor data.
AttitudeDeterminationSensorKey	Keys for attitude determination data sensor entries.
AttitudeElementsType	Attitude element set type used in CCSDS Attitude Comprehensive Messages.
AttitudeEndpoints	Endpoints for attitude definition.
AttitudeEntryKey	Keys for attitude entries in XML messages.
AttitudeEphemerisFile<C extends TimeStampedAngularCoordinates,S extends AttitudeEphemerisFile.AttitudeEphemerisSegment<C>>	An interface for accessing the data stored in an attitude ephemeris file.
AttitudeEphemerisFile.AttitudeEphemerisSegment<C extends TimeStampedAngularCoordinates>	A segment of an attitude ephemeris for a satellite.
AttitudeEphemerisFile.SatelliteAttitudeEphemeris<C extends TimeStampedAngularCoordinates,S extends AttitudeEphemerisFile.AttitudeEphemerisSegment<C>>	Contains the information about a single satellite from an AttitudeEphemerisFile.
AttitudeEphemerisFileParser<T extends AttitudeEphemerisFile<?,?>>	Parse an ephemeris file.
AttitudeEphemerisFileWriter	An interface for writing out ephemeris files to disk.
AttitudeInterpolator	Class for attitude interpolation.
AttitudeManeuver	Maneuver entry.
AttitudeManeuverKey	Keys for attitude maneuver entries.
AttitudePhysicalProperties	Spacecraft physical properties.
AttitudePhysicalPropertiesKey	Keys for physical properties data entries.
AttitudeProvider	This interface represents an attitude provider model set.
AttitudeProviderModifier	This interface represents an attitude provider that modifies/wraps another underlying provider.
AttitudesSequence	This classes manages a sequence of different attitude providers that are activated in turn according to switching events.
AttitudesSequence.SwitchHandler	Interface for attitude switch notifications.
AttitudeState	Attitude state entry.
AttitudeStateHistory	Attitude state history.
AttitudeStateHistoryMetadata	Metadata for attitude state history.
AttitudeStateHistoryMetadataKey	Keys for attitude state history container entries.
AttitudeType	Enumerate for ADM attitude type.
AttitudeWriter	An AttitudeEphemerisFileWriter generating AEM files.
Authentication	Enumerate for authentication method in DataStreamRecord.
AuxiliaryElements	Container class for common parameters used by all DSST forces.
AveragedCircularWithMeanAngle	Immutable class containing values of averaged circular elements from any applicable theory (with MEAN as PositionAngleType).
AveragedEquinoctialWithMeanAngle	Immutable class containing values of averaged equinoctial elements from any applicable theory (with MEAN as PositionAngleType).
AveragedKeplerianWithMeanAngle	Immutable class containing values of averaged Keplerian elements from any applicable theory (with MEAN as PositionAngleType).
AveragedOrbitalElements	Interface for storing averaged orbital elements.
AveragedOrbitalState	Interface representing averaged orbital elements at a specific instant.
AzimuthalGradientCoefficients	Container for the azimuthal gradient coefficients gnh, geh, gnw and gew.
AzimuthalGradientProvider	Provider for AzimuthalGradientCoefficients and FieldAzimuthalGradientCoefficients.
BaseRangeIonosphericDelayModifier	Base class modifying theoretical range measurement with ionospheric delay.
BaseRangeRateIonosphericDelayModifier	Base class modifying theoretical range-rate measurement with ionospheric delay.
BaseRangeRateTroposphericDelayModifier	Baselass modifying theoretical range-rate measurements with tropospheric delay.
BaseRangeTroposphericDelayModifier	Base class modifying theoretical range measurements with tropospheric delay.
BasicConstantThrustPropulsionModel	Constant thrust propulsion model with: - Constant thrust direction in spacecraft frame - Parameter drivers (for estimation) for the thrust norm or the flow rate.
BatchLSEstimator	Least squares estimator for orbit determination.
BatchLSModel	Bridge between measurements and least squares problems.
BatchLSObserver	Observer for batch least squares estimator iterations.
BDTScale	Beidou system time scale.
BeidouAlmanac	Class for BeiDou almanac.
BeidouCivilianNavigationMessage	Container for data contained in a Beidou civilian navigation message.
BeidouGeo	Attitude providers for Beidou geostationary orbit navigation satellites.
BeidouIGSO	Attitude providers for Beidou inclined geosynchronous orbit navigation satellites.
BeidouLegacyNavigationMessage	Container for data contained in a BeiDou navigation message.
BeidouMeo	Attitude providers for Beidou Medium Earth Orbit navigation satellites.
BeidouSatelliteType	Enumerate for Beidou satellite type.
BetaAngleDetector	Finder for beta angle crossing events.
Bias<T extends ObservedMeasurement<T>>	Class modeling a measurement bias.
BistaticRange	Class modeling a bistatic range measurement using an emitter ground station and a receiver ground station.
BistaticRangeBuilder	Builder for BistaticRange measurements.
BistaticRangeIonosphericDelayModifier	Class modifying theoretical bistatic range measurement with ionospheric delay.
BistaticRangeRate	Class modeling a bistatic range rate measurement using an emitter ground station and a receiver ground station.
BistaticRangeRateBuilder	Builder for BistaticRangeRate measurements.
BistaticRangeRateIonosphericDelayModifier	Class modifying theoretical bistatic range-rate measurement with ionospheric delay.
BistaticRangeRateTroposphericDelayModifier	Class modifying theoretical bistatic range-rate measurements with tropospheric delay.
BistaticRangeTroposphericDelayModifier	Class modifying theoretical bistatic range measurement with tropospheric delay.
BodiesElements	Elements of the bodies having an effect on nutation.
BodyCenterPointing	This class handles body center pointing attitude provider.
BodyFacade	Facade in front of several center bodies in CCSDS messages.
BodyShape	Interface representing the rigid surface shape of a natural body.
BooleanDetector	This class provides AND and OR operations for event detectors.
BoundedAttitudeProvider	This interface is intended for attitude ephemerides valid only during a time range.
BoundedPropagator	This interface is intended for ephemerides valid only during a time range.
BoxAndSolarArraySpacecraft	Class representing the features of a classical satellite with a convex body shape.
BrouwerLyddaneOrbitalState	Class representing an averaged orbital state as in the Brouwer-Lyddane theory.
BrouwerLyddanePropagator	This class propagates a SpacecraftState using the analytical Brouwer-Lyddane model (from J2 to J5 zonal harmonics).
BrouwerLyddanePropagatorBuilder	Builder for Brouwer-Lyddane propagator.
BurstSelector	Selector generating high rate bursts of dates separated by some rest period.
ByteArrayEncodedMessage	Encoded message as a byte array.
CachedNormalizedSphericalHarmonicsProvider	Caching wrapper for NormalizedSphericalHarmonicsProvider.
CanonicalSaastamoinenModel	The canonical Saastamoinen model.
CarrierPhase	Enumerate for carrier phase in DataStreamRecord.
CartesianCovariance	Container for OPM/OMM/OCM Cartesian covariance matrix.
CartesianCovarianceKey	Keys for OPM/OMM/OCM Cartesian covariance entries.
CartesianCovarianceWriter	Writer for covariance matrix data.
CartesianDerivativesFilter	Enumerate for selecting which derivatives to use in TimeStampedPVCoordinates and TimeStampedFieldPVCoordinates interpolation.
CartesianOrbit	This class holds Cartesian orbital parameters.
CasterRecord	Caster record in source table.
Cdm	This class stores all the information of the Conjunction Data Message (CDM) File parsed by CdmParser.
CdmData	Container for Conjunction Data Message data.
CdmHeader	Header of a CCSDS Conjunction Data Message.
CdmHeaderKey	Keywords allowed in CdmHeader.
CdmHeaderProcessingState	ProcessingState for CDM header.
CdmMessageWriter	Cdm message writer.
CdmMetadata	This class gathers the meta-data present in the Conjunction Data Message (CDM).
CdmMetadataKey	Keys for CDM container entries.
CdmMetadataWriter	Writer for Metadata for CCSDS Conjunction Data Messages.
CdmParser	Base class for Conjunction Data Message parsers.
CdmRelativeMetadata	This class gathers the relative meta-data present in the Conjunction Data Message (CDM).
CdmRelativeMetadataKey	Keys for CDM container entries.
CdmSegment	This class stores the metadata and data for one object.
CdmWriter	Writer for CCSDS Conjunction Data Message.
CelestialBodies	Commonly used celestial bodies.
CelestialBody	Interface for celestial bodies like Sun, Moon or solar system planets.
CelestialBodyFactory	Factory class for bodies of the solar system.
CelestialBodyFrame	Frames used in CCSDS Orbit Data Messages.
CelestialBodyLoader	Interface for loading celestial bodies.
CelestialBodyPointed	This class handles a celestial body pointed attitude provider.
CellInterpolator	Interpolator within a grid cell.
CenterName	Orbit central bodies for which a Celestial body can be created.
Chan1997	Compute the probability of collision using the method described in : "Chan, K.
ChaoMappingFunction	Chao mapping function for radio wavelengths.
ChronologicalComparator	Comparator for TimeStamped instance.
CIPM2007	Official model CIPM-2007 (identical to CIPM-1981/91) from Comité International des Poids et Mesures.
CircularFieldOfView	Class representing a spacecraft sensor Field Of View with circular shape.
CircularLatitudeArgumentUtility	Utility methods for converting between different latitude arguments used by CircularOrbit.
CircularOrbit	This class handles circular orbital parameters.
CivilianNavigationMessage	Container for data contained in a GPS/QZNSS civilian navigation message.
CjSjCoefficient	Compute the Sj(k, h) and the Cj(k, h) series and their partial derivatives with respect to k and h.
ClassicalRungeKuttaFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for ClassicalRungeKuttaFieldIntegrator.
ClassicalRungeKuttaIntegratorBuilder	Builder for ClassicalRungeKuttaIntegrator.
ClasspathCrawler	Provider for data files stored as resources in the classpath.
ClockCorrection	Container for SSR clock correction data.
ClockCorrectionsProvider	Provider for clock corrections as additional states.
ClockModel	Offset clock model.
ClockOffset	Container for time stamped clock offset.
ClockOffsetHermiteInterpolator	bHermite interpolator of time stamped clock offsets.
ClockTimeScale	Time scale with clock offset from another time scale.
CodeBias	Container for code bias data.
CoefficientsFactory	This class is designed to provide coefficient from the DSST theory.
CoefficientsFactory.NSKey	Key formed by two integer values.
CombinationType	Enumerate for combination of measurements types.
CombinedDerivatives	Container for additional derivatives.
CombinedObservationData	Combined observation data.
CombinedObservationDataSet	Combined observation data set.
CommentsContainer	Container for comments in various CCSDS messages.
CommonGnssData	Container for common GNSS data contained in almanac and navigation messages.
CommonMetadataKey	Keys for common ODM container entries.
CommonMetadataWriter	Writer for Common metadata for CCSDS Orbit Parameter/Ephemeris/Mean Messages.
CommonParametersWithDerivatives	Common intermediate parameters used to estimate measurements where receiver is a ground station.
CommonParametersWithoutDerivatives	Common intermediate parameters used to estimate measurements.
CommonPhysicalProperties	Container for common physical properties for both OrbitPhysicalProperties and AdditionalParameters.
ComparableMeasurement	Base interface for comparing measurements regardless of their type.
CompositeDataContext	A simple implementation of DataContext that composes the constituent factories into a data context.
ConfigurableLowThrustManeuver	This class implements a configurable low thrust maneuver.
ConstantAzimuthAiming	Class used to orient tiles with respect to a geographic azimuth.
ConstantAzimuthalGradientProvider	Constant provider for AzimuthalGradientCoefficients and FieldAzimuthalGradientCoefficients.
ConstantOffsetTimeScale	Base class for time scales with constant offset with respecto to TAI.
ConstantPressureTemperatureHumidityProvider	Provider for constant weather parameters.
ConstantProcessNoise	Provider for constant process noise matrices.
ConstantPVCoordinatesProvider	Provider based on a single point.
Constants	Set of useful physical constants.
ConstantThrustDirectionProvider	Simple implementation of VariableThrustDirectionVector, providing a constant direction.
ConstantThrustManeuver	This class implements a simple maneuver with constant thrust.
ConstantTroposphericModel	Defines a constant tropospheric model.
ConstantViennaAProvider	Provider for constant Vienna A coefficients.
ContextBinding	Context for parsing/writing Navigation Data Message.
ContinueOnEvent	Event handler which will always return continue as a state.
ContinuousScheduler<T extends ObservedMeasurement<T>>	Scheduler generating measurements sequences continuously.
Control3DVectorCostType	Enumerate on types of cost for 3D control vector (thrust as a force or acceleration, including an impulse) at a given time.
CorrectionApplied	Indicator for corrections application.
CovarianceMatrixProvider	Provider for process noise matrices.
CovarianceMethod	Maneuvrable possibilities used in CCSDS Conjunction Data Messages.
CPF	This class stores all the information of the Consolidated laser ranging Prediction File (CPF) parsed by CPFParser.
CPF.CPFCoordinate	A single record of position and possibility velocity in an SP3 file.
CPFHeader	Container for Consolidated laser ranging Prediction File (CPF) header.
CPFParser	A parser for the CPF orbit file format.
CPFWriter	An CPF Writer class that can take in a general EphemerisFile object and export it as a valid CPF file.
CR3BPConstants	Set of useful physical CR3BP constants using JPL data.
CR3BPDifferentialCorrection	Class implementing the differential correction method for Halo or Lyapunov Orbits.
CR3BPFactory	Factory class creating predefined CR3BP system using CR3BPSystem class.
CR3BPForceModel	Class calculating the acceleration induced by CR3BP model.
CR3BPMultipleShooter	Multiple shooting method applicable for orbits, either propagation in CR3BP, or in an ephemeris model.
CR3BPRotatingFrame	Class creating the rotating frame centered on the barycenter of the CR3BP System.
CR3BPSystem	Class creating, from two different celestial bodies, the corresponding system with respect to the Circular Restricted Three Body problem hypotheses.
CRD	This class stores all the information of the Consolidated laser ranging Data Format (CRD) parsed by CRDParser.
CRD.AnglesMeasurement	Pointing angles record.
CRD.Calibration	Calibration Record.
CRD.CalibrationDetail	Calibration Detail Record.
CRD.CRDDataBlock	Data block containing a set of data contain in the CRD file.
CRD.FrRangeMeasurement	Range record -- Full rate, Sampled Engineering/Quicklook.
CRD.Meteo	Meteorological data.
CRD.MeteorologicalMeasurement	This data record contains a minimal set of meteorological data.
CRD.NptRangeMeasurement	Range record -- Normal Point.
CRD.RangeMeasurement	Range record.
CRD.RangeSupplement	Range Supplement Record.
CRD.SessionStatistics	Session (Pass) Statistics Record.
CRDConfiguration	Container for Consolidated laser ranging Data Format (CDR) configuration records.
CRDConfiguration.BaseConfiguration	Base class for configuration record.
CRDConfiguration.CalibrationTargetConfiguration	Container for calibration target configuration record.
CRDConfiguration.DetectorConfiguration	Container for detector configuration record.
CRDConfiguration.LaserConfiguration	Container for laser configuration record.
CRDConfiguration.MeteorologicalConfiguration	Container for meteorological configuration record.
CRDConfiguration.SoftwareConfiguration	Container for software configuration record.
CRDConfiguration.SystemConfiguration	Container for system configuration record.
CRDConfiguration.TimingSystemConfiguration	Container for timing system configuration record.
CRDConfiguration.TransponderConfiguration	Container for transponder configuration record.
CRDHeader	Container for Consolidated laser ranging Data Format (CDR) header.
CRDHeader.DataType	Data type for CRD data.
CRDHeader.RangeType	Range type for SLR data.
CRDParser	A parser for the CRD data file format.
CssiSpaceWeatherData	This class provides three-hourly and daily solar activity data needed by atmospheric models: F107 solar flux, Ap and Kp indexes.
CssiSpaceWeatherDataLoader	This class reads solar activity data from CSSI Space Weather files for the class CssiSpaceWeatherData.
CssiSpaceWeatherDataLoader.LineParameters	Container class for Solar activity indexes.
CycleSlipDetectorResults	This class is used to contains all the data computed within cycle-slip detector.
CycleSlipDetectors	Interface for phase measurement cycle-slip detection.
CylindricallyShadowedLightFluxModel	Class defining a flux model with a single occulting body, casting a shadow whose shape is a circular cylinder (equivalent to the light source being infinitely distant).
CylindricalShadowEclipseDetector	Event detector for eclipses from a single, infinitely-distant light source, occulted by a spherical central body.
Data	This marker interface represents segment data.
DataContext	Provides auxiliary data for portions of the application.
DataField	Interface for data fields used to parsed encoded messages.
DataFilter	Interface for filtering data (typically uncompressing it) in data providers before passing it to data loaders.
DataFormat	Enumerate for data format in DataStreamRecord.
DataLoader	Interface for loading data files from data providers.
DataProvider	Interface for providing data files to file loaders.
DataProvidersManager	This class manages supported data providers.
DataQuality	Quality of the data.
DataSource	Container associating a name with a stream or reader that can be opened lazily.
DataSource.Opener	Interface for lazy-opening data streams one time.
DataSource.ReaderOpener	Interface for lazy-opening a characters stream one time.
DataSource.StreamOpener	Interface for lazy-opening a binary stream one time.
DataStreamRecord	Data stream record in source table.
DataType	Enum containing all low level data types that can be parsed to build a message.
DataUsed	Enumerate for data used.
DateBasedManeuverTriggers	Maneuver triggers based on a start and end date.
DateComponents	Class representing a date broken up as year, month and day components.
DateDetector	Finder for date events.
DateDriver	Parameter driver allowing to drive a date.
DatesSelector	Interface for selecting dates within an interval.
DateTimeComponents	Holder for date and time components.
Dcb	Class to store DCB Solution data parsed in the SinexLoader.
DcbDescription	Class to store the DCB description parameters.
DcbSatellite	Class based on DCB, used to store the data parsed in SinexLoader for Differential Code Biases computed for satellites.
DcbStation	Class based on DCB, used to store the data parsed in SinexLoader for Differential Code Biases computed for stations.
DeepSDP4	This class contains the methods that compute deep space perturbation terms.
DefaultDataContext	Indicates that the annotated method, field, or constructor uses the default data context.
DefaultDataContextPlugin	Processes DefaultDataContext to issue warnings at compile time.
DefaultEncounterLOF	Default encounter local orbital frame.
DelaunayArguments	Delaunay arguments used for nutation or tides.
DeSitterRelativity	De Sitter post-Newtonian correction force due to general relativity.
Differentiation	Utility class for differentiating various kinds of functions.
Dipole	Dipole configuration for satellite-to-ground and inter-satellites wind-up effects.
DirectoryCrawler	Provider for data files stored in a directories tree on filesystem.
DiscreteTroposphericModel	Deprecated. as of 12.1, replaced by TroposphericModel
DivertedSingularityAiming	Class used to orient tiles such that there are no singularities within the zone of interest.
DOP	This class is a container for the result of a single DOP computation.
DOPComputer	This class aims at computing the dilution of precision.
DormandPrince54FieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for DormandPrince54FieldIntegrator.
DormandPrince54IntegratorBuilder	Builder for DormandPrince54Integrator.
DormandPrince853FieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for DormandPrince853FieldIntegrator.
DormandPrince853IntegratorBuilder	Builder for DormandPrince853Integrator.
DoubleArrayDictionary	String → double[] mapping, for small number of keys.
DoubleArrayDictionary.Entry	Entry in a dictionary.
DoubleDihedraFieldOfView	Class representing a spacecraft sensor Field Of View with dihedral shape (i.e.
DragForce	Atmospheric drag force model.
DragSensitive	Interface for spacecraft that are sensitive to atmospheric drag forces.
DSST6X0OrbitalState	Class representing an averaged orbital state as in the DSST theory using only the first 6 zonal harmonics as perturbations.
DSSTAtmosphericDrag	Atmospheric drag contribution to the DSSTPropagator.
DSSTBatchLSModel	Bridge between measurements and least squares problems.
DSSTForceModel	This interface represents a force modifying spacecraft motion for a DSSTPropagator.
DSSTHarvester	Harvester between two-dimensional Jacobian matrices and one-dimensional additional state arrays.
DSSTJ2SquaredClosedForm	Second order J2-squared force model.
DSSTJ2SquaredClosedFormContext	This class is a container for the common parameters used in DSSTJ2SquaredClosedForm.
DSSTNewtonianAttraction	Force model for Newtonian central body attraction for the DSST propagator.
DSSTNewtonianAttractionContext	This class is a container for the common parameters used in DSSTNewtonianAttraction.
DSSTPropagator	This class propagates orbits using the DSST theory.
DSSTPropagatorBuilder	Builder for DSST propagator.
DSSTSolarRadiationPressure	Solar radiation pressure contribution to the DSSTPropagator.
DSSTTesseral	Tesseral contribution to the central body gravitational perturbation.
DSSTTesseralContext	This class is a container for the common parameters used in DSSTTesseral.
DSSTThirdBody	Third body attraction perturbation to the DSSTPropagator.
DSSTThirdBodyDynamicContext	This class is a container for the common parameters used in DSSTThirdBody.
DSSTThirdBodyStaticContext	This class is a container for the common parameters used in DSSTThirdBody.
DSSTZonal	Zonal contribution to the central body gravitational perturbation.
DSSTZonalContext	This class is a container for the common parameters used in DSSTZonal.
DtcDataLoader	This class reads solar activity data from DTCFILE files for the class JB2008SpaceEnvironmentData.
DtcDataLoader.LineParameters	Container class for Solar activity indexes.
DTM2000	This atmosphere model is the realization of the DTM-2000 model.
DTM2000InputParameters	Container for solar activity data, compatible with DTM2000 Atmosphere model.
DualFrequencyHatchFilter	Hatch Filter using Carrier-Phase measurements taken at two different frequencies, to form a Divergence-Free phase combination.
DualFrequencySmoother	Handler to perform pseudo-range smoothing using Divergence-Free phase combinations.
DummyMappingFunction	Dummy mapping function.
Duration	Generator for one column of a Jacobian matrix for special case of maneuver duration.
DutyCycleType	Type of duty cycle used in CCSDS Orbit Comprehensive Messages.
DynamicOutlierFilter<T extends ObservedMeasurement<T>>	Modifier that sets estimated measurement weight to 0 if residual is too far from expected domain.
EarthITU453AtmosphereRefraction	Implementation of refraction model for Earth exponential atmosphere based on ITU-R P.834-7 recommendation.
EarthOrientationParameterMessage	Container for data contained in a Earth Orientation Parameter navigation message.
EarthShape	All models of Earth's shape have some common properties that are not shared with arbitrary BodyShapes.
EarthStandardAtmosphereRefraction	Implementation of refraction model for Earth standard atmosphere.
EcksteinHechlerOrbitalState	Class representing an averaged orbital state as in the Eckstein-Hechler theory.
EcksteinHechlerPropagator	This class propagates a SpacecraftState using the analytical Eckstein-Hechler model.
EcksteinHechlerPropagatorBuilder	Builder for Eckstein-Hechler propagator.
EclipseDetector	Finder for satellite eclipse related events.
EclipticProvider	An inertial frame aligned with the ecliptic.
ECOM2	The Empirical CODE Orbit Model 2 (ECOM2) of the Center for Orbit Determination in Europe (CODE).
EGMFormatReader	This reader is adapted to the EGM Format.
ElevationDetectionAdaptableIntervalFactory	Factory class for AdaptableInterval suitable for elevation detection on eccentric orbits.
ElevationDetector	Finder for satellite raising/setting events that allows for the setting of azimuth and/or elevation bounds or a ground azimuth/elevation mask input.
ElevationExtremumDetector	Detector for elevation extremum with respect to a ground point.
ElevationFilter<T extends ObservedMeasurement<T>>	Elevation pre-processing filter.
ElevationMask	Class for modeling the ground elevation values around a given point.
Ellipse	Model of a 2D ellipse in 3D space.
Ellipsoid	Modeling of a general three-axes ellipsoid.
EllipsoidTessellator	Class used to tessellate an interest zone on an ellipsoid in either tiles or grids of geodetic points.
EllipticalFieldOfView	Class representing a spacecraft sensor Field Of View with elliptical shape.
EnablingPredicate	This interface represents an event enabling predicate function.
EncodedMessage	Interface for getting bits forming encoded messages.
EncounterLOF	Interface for encounter local orbital frame.
EncounterLOFType	Enum for encounter local orbital frame.
EOPBasedTransformProvider	Interface for Transform providers that use Earth Orientation Parameters.
EOPEntry	This class holds an Earth Orientation Parameters entry.
EOPFittedModel	Container for fitted model for Earth Orientation Parameters.
EOPFitter	Earth Orientation Parameters fitter for EOP prediction.
EOPHistory	This class loads any kind of Earth Orientation Parameter data throughout a large time range.
EopHistoryLoader	Interface for loading Earth Orientation Parameters history.
EopHistoryLoader.Parser	Interface for parsing EOP data files.
Ephemeris	This class is designed to accept and handle tabulated orbital entries.
EphemerisFile<C extends TimeStampedPVCoordinates,S extends EphemerisFile.EphemerisSegment<C>>	An interface for accessing the data stored in an ephemeris file and using the data to create a working Propagator.
EphemerisFile.EphemerisSegment<C extends TimeStampedPVCoordinates>	A segment of an ephemeris for a satellite.
EphemerisFile.SatelliteEphemeris<C extends TimeStampedPVCoordinates,S extends EphemerisFile.EphemerisSegment<C>>	Contains the information about a single satellite from an EphemerisFile.
EphemerisFileParser<T extends EphemerisFile<?,?>>	Parse an ephemeris file.
EphemerisFileWriter	An interface for writing out ephemeris files to disk.
EphemerisGenerator	Generator for ephemerides.
EphemerisOcmWriter	An EphemerisFileWriter generating OCM files.
EphemerisOemWriter	An EphemerisFileWriter generating OEM files.
EphemerisPropagatorBuilder	Builder for Ephemeris propagator.
EphemerisSegmentPropagator<C extends TimeStampedPVCoordinates>	A Propagator based on a EphemerisFile.EphemerisSegment.
EpochDerivativesEquations	Computes derivatives of the acceleration, including ThirdBodyAttraction.
EquinoctialLongitudeArgumentUtility	Utility methods for converting between different longitude arguments used by EquinoctialOrbit.
EquinoctialOrbit	This class handles equinoctial orbital parameters, which can support both circular and equatorial orbits.
ErrorState	Special ProcessingState that always generate an error message.
EstimatedEarthFrameProvider	Class modeling an Earth frame whose Earth Orientation Parameters can be estimated.
EstimatedIonosphericModel	An estimated ionospheric model.
EstimatedMeasurement<T extends ObservedMeasurement<T>>	Class holding an estimated theoretical value associated to an observed measurement.
EstimatedMeasurementBase<T extends ObservedMeasurement<T>>	Class holding an estimated theoretical value associated to an observed measurement.
EstimatedMeasurementBase.Status	Enumerate for the status of the measurement.
EstimatedModel	An estimated tropospheric model.
EstimatedTroposphericModel	Deprecated. as of 12.1, replaced by EstimatedModel
EstimationModifier<T extends ObservedMeasurement<T>>	Interface for estimated measurements modifiers used for orbit determination.
EstimationsProvider	Interface for retrieving estimated measurements during orbit determination.
Euler	Container for Euler rotations entries.
EulerFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for EulerFieldIntegrator.
EulerIntegratorBuilder	Builder for EulerIntegrator.
EulerKey	Keys for APM Euler angles entries.
EventBasedScheduler<T extends ObservedMeasurement<T>>	Scheduler based on EventDetector for generating measurements sequences.
EventDetector	This interface represents space-dynamics aware events detectors.
EventDetectorsProvider	Interface for building event detectors for force models and maneuver parameters.
EventEnablingPredicateFilter	Wrapper used to detect events only when enabled by an external predicated function.
EventHandler	An interface defining how to handle events occurring during propagation.
EventMultipleHandler	Facade handlers that allows to use several handlers for one detector.
EventShifter	Wrapper shifting events occurrences times.
EventsLogger	This class logs events detectors events during propagation.
EventsLogger.LoggedEvent	Class for logged events entries.
EventSlopeFilter<T extends EventDetector>	Wrapper used to detect only increasing or decreasing events.
EventState<T extends EventDetector>	This class handles the state for one event detector during integration steps.
EventState.EventOccurrence	Class to hold the data related to an event occurrence that is needed to decide how to modify integration.
ExceptionalDataContext	A data context that always throws a runtime exception when it's methods are used.
ExtendedPositionProvider	Interface for position providers (including for Field).
ExtendedPVCoordinatesProvider	Interface for PV coordinates providers that also support fields.
ExtendedPVCoordinatesProviderAdapter	Adapter from ExtendedPVCoordinatesProvider to TransformProvider.
ExtremumApproachDetector	Finder for extremum approach events.
FactoryManagedFrame	Base class for the predefined frames that are managed by Frames.
FDOA	Class modeling a Frequency Difference of Arrival measurement with a satellite as emitter and two ground stations as receivers.
FDOABuilder	Builder for FDOA measurements.
FESCHatEpsilonReader	Reader for ocean tides files following the fes2004.dat format.
FESCnmSnmReader	Reader for ocean tides files following the fes2004_Cnm-Snm.dat format.
FieldAbsoluteDate<T extends CalculusFieldElement<T>>	This class represents a specific instant in time.
FieldAbsolutePVCoordinates<T extends CalculusFieldElement<T>>	Field implementation of AbsolutePVCoordinates.
FieldAbsolutePVCoordinatesHermiteInterpolator<KK extends CalculusFieldElement<KK>>	Class using a Hermite interpolator to interpolate absolute position-velocity-acceleration coordinates.
FieldAbstractAnalyticalPropagator<T extends CalculusFieldElement<T>>	Common handling of FieldPropagator methods for analytical propagators.
FieldAbstractDetector<D extends FieldAbstractDetector<D,T>,T extends CalculusFieldElement<T>>	Common parts shared by several orbital events finders.
FieldAbstractGaussianContributionContext<T extends CalculusFieldElement<T>>	This class is a container for the common "field" parameters used in AbstractGaussianContribution.
FieldAbstractIntegratedPropagator<T extends CalculusFieldElement<T>>	Common handling of FieldPropagator methods for both numerical and semi-analytical propagators.
FieldAbstractIntegratedPropagator.MainStateEquations<T extends CalculusFieldElement<T>>	Differential equations for the main state (orbit, attitude and mass).
FieldAbstractPropagator<T extends CalculusFieldElement<T>>	Common handling of Propagator methods for analytical propagators.
FieldAbstractStateModifier<T extends CalculusFieldElement<T>>	Abstract base class for modifying state during propagation.
FieldAdaptableInterval<T extends CalculusFieldElement<T>>	This interface represents an event checking interval that depends on state.
FieldAdapterDetector<T extends CalculusFieldElement<T>>	Base class for adapting an existing detector.
FieldAdditionalDerivativesProvider<T extends CalculusFieldElement<T>>	Provider for additional derivatives.
FieldAdditionalStateProvider<T extends CalculusFieldElement<T>>	This interface allows to modify FieldSpacecraftState and set up additional state data.
FieldAltitudeDetector<T extends CalculusFieldElement<T>>	Finder for satellite altitude crossing events.
FieldAngularCoordinates<T extends CalculusFieldElement<T>>	Simple container for rotation / rotation rate pairs, using CalculusFieldElement.
FieldApsideDetector<T extends CalculusFieldElement<T>>	Finder for apside crossing events.
FieldArrayDictionary<T extends CalculusFieldElement<T>>	String → CalculusFieldElement[] mapping, for small number of keys.
FieldAttitude<T extends CalculusFieldElement<T>>	This class handles attitude definition at a given date.
FieldAttitudeInterpolator<KK extends CalculusFieldElement<KK>>	Class for attitude interpolation.
FieldAuxiliaryElements<T extends CalculusFieldElement<T>>	Container class for common parameters used by all DSST forces.
FieldAzimuthalGradientCoefficients<T extends CalculusFieldElement<T>>	Container for the azimuthal gradient coefficients gnh, geh, gnw and gew.
FieldBetaAngleDetector<T extends CalculusFieldElement<T>>	Finder for beta angle crossing events.
FieldBodiesElements<T extends CalculusFieldElement<T>>	Elements of the bodies having an effect on nutation.
FieldBooleanDetector<T extends CalculusFieldElement<T>>	This class provides AND and OR operations for event detectors.
FieldBoundedPropagator<T extends CalculusFieldElement<T>>	This interface is intended for ephemerides valid only during a time range.
FieldBrouwerLyddanePropagator<T extends CalculusFieldElement<T>>	This class propagates a FieldSpacecraftState using the analytical Brouwer-Lyddane model (from J2 to J5 zonal harmonics).
FieldCartesianOrbit<T extends CalculusFieldElement<T>>	This class holds Cartesian orbital parameters.
FieldCellInterpolator<T extends CalculusFieldElement<T>>	Interpolator within a grid cell.
FieldChronologicalComparator<KK extends CalculusFieldElement<KK>>	Comparator for FieldTimeStamped instance.
FieldCircularLatitudeArgumentUtility	Utility methods for converting between different latitude arguments used by FieldCircularOrbit.
FieldCircularOrbit<T extends CalculusFieldElement<T>>	This class handles circular orbital parameters.
FieldCjSjCoefficient<T extends CalculusFieldElement<T>>	Compute the Sj(k, h) and the Cj(k, h) series and their partial derivatives with respect to k and h.
FieldClockOffset<T extends CalculusFieldElement<T>>	Container for time stamped clock offset.
FieldClockOffsetHermiteInterpolator<T extends CalculusFieldElement<T>>	bHermite interpolator of time stamped clock offsets.
FieldCombinedDerivatives<T extends CalculusFieldElement<T>>	Container for additional derivatives.
FieldContinueOnEvent<T extends CalculusFieldElement<T>>	Event handler which will always return continue as a state.
FieldCylindricalShadowEclipseDetector<T extends CalculusFieldElement<T>>	Event detector for eclipses from a single, infinitely-distant light source, occulted by a spherical central body.
FieldDateDetector<T extends CalculusFieldElement<T>>	Finder for date events.
FieldDeepSDP4<T extends CalculusFieldElement<T>>	This class contains the methods that compute deep space perturbation terms.
FieldDelaunayArguments<T extends CalculusFieldElement<T>>	Delaunay arguments used for nutation or tides.
FieldDSSTJ2SquaredClosedFormContext<T extends CalculusFieldElement<T>>	This class is a container for the common parameters used in DSSTJ2SquaredClosedForm.
FieldDSSTNewtonianAttractionContext<T extends CalculusFieldElement<T>>	This class is a container for the common "field" parameters used in DSSTNewtonianAttraction.
FieldDSSTPropagator<T extends CalculusFieldElement<T>>	This class propagates orbits using the DSST theory.
FieldDSSTTesseralContext<T extends CalculusFieldElement<T>>	This class is a container for the common "field" parameters used in DSSTTesseral.
FieldDSSTThirdBodyDynamicContext<T extends CalculusFieldElement<T>>	This class is a container for the common "field" parameters used in DSSTThirdBody.
FieldDSSTZonalContext<T extends CalculusFieldElement<T>>	This class is a container for the common "field" parameters used in DSSTZonal.
FieldEcksteinHechlerPropagator<T extends CalculusFieldElement<T>>	This class propagates a FieldSpacecraftState using the analytical Eckstein-Hechler model.
FieldEclipseDetector<T extends CalculusFieldElement<T>>	Finder for satellite eclipse related events.
FieldElevationDetector<T extends CalculusFieldElement<T>>	Finder for satellite raising/setting events that allows for the setting of azimuth and/or elevation bounds or a ground azimuth/elevation mask input.
FieldElevationExtremumDetector<T extends CalculusFieldElement<T>>	Detector for elevation extremum with respect to a ground point.
FieldEllipse<T extends CalculusFieldElement<T>>	Model of a 2D ellipse in 3D space.
FieldEnablingPredicate<T extends CalculusFieldElement<T>>	This interface represents an event enabling predicate function.
FieldEphemerisGenerator<T extends CalculusFieldElement<T>>	Generator for ephemerides.
FieldEquinoctialLongitudeArgumentUtility	Utility methods for converting between different longitude arguments used by FieldEquinoctialOrbit.
FieldEquinoctialOrbit<T extends CalculusFieldElement<T>>	This class handles equinoctial orbital parameters, which can support both circular and equatorial orbits.
FieldEventDetector<T extends CalculusFieldElement<T>>	This interface represents space-dynamics aware events detectors.
FieldEventEnablingPredicateFilter<T extends CalculusFieldElement<T>>	Wrapper used to detect events only when enabled by an external predicated function.
FieldEventHandler<T extends CalculusFieldElement<T>>	An interface defining how to handle events occurring during propagation..
FieldEventsLogger<T extends CalculusFieldElement<T>>	This class logs events detectors events during propagation.
FieldEventsLogger.FieldLoggedEvent<T extends CalculusFieldElement<T>>	Class for logged events entries.
FieldEventSlopeFilter<D extends FieldEventDetector<T>,T extends CalculusFieldElement<T>>	Wrapper used to detect only increasing or decreasing events.
FieldEventState<D extends FieldEventDetector<T>,T extends CalculusFieldElement<T>>	This class handles the state for one event detector during integration steps.
FieldEventState.EventOccurrence<T extends CalculusFieldElement<T>>	Class to hold the data related to an event occurrence that is needed to decide how to modify integration.
FieldExtremumApproachDetector<T extends CalculusFieldElement<T>>	Finder for extremum approach events.
FieldFixedNumberInterpolationGrid<T extends CalculusFieldElement<T>>	Interpolation grid where a fixed number of points are evenly spaced between the start and the end of the integration step.
FieldForceModelContext<T extends CalculusFieldElement<T>>	Base class for dsst force models parameter containers.
FieldFunctionalDetector<T extends CalculusFieldElement<T>>	A detector that implements the FieldFunctionalDetector.g(FieldSpacecraftState) function using a lambda that can be set using FieldFunctionalDetector.withFunction(Function).
FieldGammaMnsFunction<T extends CalculusFieldElement<T>>	Compute the Γmn,s(γ) function from equation 2.7.1-(13).
FieldGeodeticPoint<T extends CalculusFieldElement<T>>	Point location relative to a 2D body surface, using CalculusFieldElement.
FieldGHIJjsPolynomials<T extends CalculusFieldElement<T>>	Compute the Gjs, Hjs, Ijs and Jjs polynomials in the equinoctial elements h, k and the direction cosines α and β and their partial derivatives with respect to k, h, α and β.
FieldGHmsjPolynomials<T extends CalculusFieldElement<T>>	Compute the Gmsj and the Hmsj polynomials in the equinoctial elements h, k and the direction cosines α and β and their partial derivatives with respect to k, h, α and β.
FieldHansenTesseralLinear<T extends CalculusFieldElement<T>>	Hansen coefficients K(t,n,s) for t!=0 and n < 0.
FieldHansenThirdBodyLinear<T extends CalculusFieldElement<T>>	Hansen coefficients K(t,n,s) for t=0 and n > 0.
FieldHansenZonalLinear<T extends CalculusFieldElement<T>>	Hansen coefficients K(t,n,s) for t=0 and n < 0.
Fieldifier	Utility class used to convert class to their Field equivalent.
FieldImpulseManeuver<D extends FieldEventDetector<T>,T extends CalculusFieldElement<T>>	Impulse maneuver model for propagators working with Fields.
FieldInertia<T extends CalculusFieldElement<T>>	Container for inertia of a 3D object.
FieldInertiaAxis<T extends CalculusFieldElement<T>>	Container for inertial axis.
FieldIntegratedEphemeris<T extends CalculusFieldElement<T>>	This class stores sequentially generated orbital parameters for later retrieval.
FieldIntelsatElevenElements<T extends CalculusFieldElement<T>>	This class is a container for a single set of Intelsat's 11 Elements data.
FieldIntelsatElevenElementsPropagator<T extends CalculusFieldElement<T>>	This class provides elements to propagate Intelsat's 11 elements.
FieldInterpolationGrid<T extends CalculusFieldElement<T>>	Interface for interpolation grids.
FieldKeplerianAnomalyUtility	Utility methods for converting between different Keplerian anomalies.
FieldKeplerianOrbit<T extends CalculusFieldElement<T>>	This class handles traditional Keplerian orbital parameters.
FieldKeplerianPropagator<T extends CalculusFieldElement<T>>	Simple Keplerian orbit propagator.
FieldKinematicTransform<T extends CalculusFieldElement<T>>	A transform that only includes translation and rotation as well as their respective rates.
FieldLatitudeCrossingDetector<T extends CalculusFieldElement<T>>	Detector for geographic latitude crossing.
FieldLatitudeRangeCrossingDetector<T extends CalculusFieldElement<T>>	Detector for geographic latitude crossing.
FieldLegendrePolynomials<T extends CalculusFieldElement<T>>	Computes the Pnm(t) coefficients.
FieldLnsCoefficients<T extends CalculusFieldElement<T>>	Compute the Lns(γ).
FieldLongitudeCrossingDetector<T extends CalculusFieldElement<T>>	Detector for geographic longitude crossing.
FieldLongitudeRangeCrossingDetector<T extends CalculusFieldElement<T>>	Detector for geographic longitude crossing.
FieldManeuverTriggersResetter<T extends CalculusFieldElement<T>>	Resetter for maneuver triggers.
FieldMaxGapInterpolationGrid<T extends CalculusFieldElement<T>>	Interpolation grid where points obey a maximum time gap.
FieldNegateDetector<T extends CalculusFieldElement<T>>	An event detector that negates the sign on another event detector's g function.
FieldNodeDetector<T extends CalculusFieldElement<T>>	Finder for node crossing events.
FieldNumericalPropagator<T extends CalculusFieldElement<T>>	This class propagates orbits using numerical integration.
FieldODEIntegratorBuilder<T extends CalculusFieldElement<T>>	This interface is the top-level abstraction to build first order integrators for propagators conversion.
FieldOfView	Interface representing a spacecraft sensor Field Of View.
FieldOfViewDetector	Finder for target entry/exit events with respect to a satellite sensor Field Of View.
FieldOrbit<T extends CalculusFieldElement<T>>	This class handles orbital parameters.
FieldOrbitBlender<KK extends CalculusFieldElement<KK>>	Orbit blender.
FieldOrbitHermiteInterpolator<KK extends CalculusFieldElement<KK>>	Class using a Hermite interpolator to interpolate orbits.
FieldOrekitFixedStepHandler<T extends CalculusFieldElement<T>>	This interface is a space-dynamics aware fixed size step handler.
FieldOrekitStepHandler<T extends CalculusFieldElement<T>>	This interface is a space-dynamics aware step handler.
FieldOrekitStepInterpolator<T extends CalculusFieldElement<T>>	This interface is a space-dynamics aware step interpolator.
FieldOrekitStepNormalizer<T extends CalculusFieldElement<T>>	This class wraps an object implementing OrekitFixedStepHandler into a OrekitStepHandler.
FieldParameterDrivenDateIntervalDetector<T extends CalculusFieldElement<T>>	Detector for date intervals that may be offset thanks to parameter drivers.
FieldPoleCorrection<T extends CalculusFieldElement<T>>	Simple container class for pole correction parameters.
FieldPressureTemperature<T extends CalculusFieldElement<T>>	Container for pressure and temperature.
FieldPressureTemperatureHumidity<T extends CalculusFieldElement<T>>	Container for pressure, temperature, and humidity.
FieldProbabilityOfCollision<T extends CalculusFieldElement<T>>	Container for values relative to the probability of collision : Value of the probability of collision. Name of the method with which it was computed. Upper and lower limit of the value if the method provides them (such as Laas2015 for example). Flag defining if the probability was maximized in any way (such as Alfriend1999Max for example).
FieldPropagator<T extends CalculusFieldElement<T>>	This interface provides a way to propagate an orbit at any time.
FieldPVCoordinates<T extends CalculusFieldElement<T>>	Simple container for Position/Velocity pairs, using CalculusFieldElement.
FieldPVCoordinatesProvider<T extends CalculusFieldElement<T>>	Interface for PV coordinates providers.
FieldRecallLastOccurrence<T extends CalculusFieldElement<T>>	Event handler wrapping another, arbitrary one whilst remembering date of last detection.
FieldRecordAndContinue<T extends CalculusFieldElement<T>>	Handler that will record every time an event occurs and always return Action.CONTINUE.
FieldRecordAndContinue.Event<T extends CalculusFieldElement<T>>	A single event detected during propagation.
FieldRelativeDistanceDetector<T extends CalculusFieldElement<T>>	Detector of specific value for the distance relative to another trajectory (using the Euclidean norm).
FieldSGP4<T extends CalculusFieldElement<T>>	This class contains methods to compute propagated coordinates with the SGP4 model.
FieldShiftingPVCoordinatesProvider<T extends CalculusFieldElement<T>>	Provider using simple FieldPVCoordinates.shiftedBy(CalculusFieldElement) shiftedBy} and frame transforms for evolution.
FieldShortPeriodicsInterpolatedCoefficient<T extends CalculusFieldElement<T>>	Interpolated short periodics coefficients.
FieldShortPeriodTerms<T extends CalculusFieldElement<T>>	Additive short period terms contributing to the mean to osculating orbit mapping.
FieldShortTermEncounter2DDefinition<T extends CalculusFieldElement<T>>	Defines the encounter between two collision object at time of closest approach assuming a short-term encounter model .
FieldSortedListTrimmer	A trimmer for externally stored chronologically sorted lists.
FieldSpacecraftState<T extends CalculusFieldElement<T>>	This class is the representation of a complete state holding orbit, attitude and mass information at a given date, meant primarily for propagation.
FieldSpacecraftStateInterpolator<KK extends CalculusFieldElement<KK>>	Generic class for spacecraft state interpolator.
FieldStateCovariance<T extends CalculusFieldElement<T>>	This class is the representation of a covariance matrix at a given date.
FieldStateMapper<T extends CalculusFieldElement<T>>	This class maps between raw double elements and FieldSpacecraftState instances.
FieldStaticTransform<T extends CalculusFieldElement<T>>	A transform that only includes translation and rotation.
FieldStepHandlerMultiplexer<T extends CalculusFieldElement<T>>	This class gathers several OrekitStepHandler instances into one.
FieldStopOnDecreasing<T extends CalculusFieldElement<T>>	Handle a detection event and choose what to do next.
FieldStopOnEvent<T extends CalculusFieldElement<T>>	Event handler which will always return continue as a state.
FieldStopOnIncreasing<T extends CalculusFieldElement<T>>	Handle a detection event and choose what to do next.
FieldTimeDerivativesEquations<T extends CalculusFieldElement<T>>	Interface summing up the contribution of several forces into orbit and mass derivatives.
FieldTimeInterpolator<T extends FieldTimeStamped<KK>,KK extends CalculusFieldElement<KK>>	This interface represents objects that can interpolate a time stamped value with respect to time.
FieldTimeShiftable<T extends FieldTimeShiftable<T,KK>,KK extends CalculusFieldElement<KK>>	This interface represents objects that can be shifted in time.
FieldTimeSpanMap<T,D extends CalculusFieldElement<D>>	Container for objects that apply to spans of time.
FieldTimeSpanMap.Transition<S,D extends CalculusFieldElement<D>>	Local class holding transition times.
FieldTimeStamped<T extends CalculusFieldElement<T>>	This interface represents objects that have a AbsoluteDate date attached to them.
FieldTimeStampedCache<T extends FieldTimeStamped<KK>,KK extends CalculusFieldElement<KK>>	Interface for a data structure that can provide concurrent access to FieldTimeStamped data surrounding a given date.
FieldTimeStampedPair<F extends FieldTimeStamped<KK>,S extends FieldTimeStamped<KK>,KK extends CalculusFieldElement<KK>>	Pair of time stamped values being defined at the same date.
FieldTLE<T extends CalculusFieldElement<T>>	This class is a container for a single set of TLE data.
FieldTLEPropagator<T extends CalculusFieldElement<T>>	This class provides elements to propagate TLE's.
FieldTrackingCoordinates<T extends CalculusFieldElement<T>>	Container for azimut/elevation/range coordinates as seen from a ground point.
FieldTransform<T extends CalculusFieldElement<T>>	Transformation class in three-dimensional space.
FieldTransformGenerator<T extends CalculusFieldElement<T>>	Generator to use field transforms in GenericTimeStampedCache.
FieldTroposphericDelay<T extends CalculusFieldElement<T>>	Container for tropospheric delay.
FieldViennaACoefficients<T extends CalculusFieldElement<T>>	Container for the ViennaOne and ViennaThree coefficients ah and aw.
FileFormat	Enumerate for file format.
FilesListCrawler	Provider for data files in an explicit list.
FiltersManager	Manager for data filters.
FilterType	Enumerate for filtering events.
FiniteDifferencePropagatorConverter	Propagator converter using finite differences to compute the Jacobian.
FixedFrameBuilder	Builder that assumes angular coordinates are given in a fixed frame.
FixedNumberInterpolationGrid	Interpolation grid where a fixed number of points are evenly spaced between the start and the end of the integration step.
FixedPanel	Class representing one panel of a satellite, fixed with respect to satellite body.
FixedPointOsculatingToAveragedConverter<T extends AveragedOrbitalState>	Abstract class for osculating-to-averaged converters based on a fixed-point algorithm.
FixedPointTleGenerationAlgorithm	Fixed Point method to reverse SGP4 and SDP4 propagation algorithm and generate a usable TLE from a spacecraft state.
FixedRate	This class handles a simple attitude provider at constant rate around a fixed axis.
FixedStepSelector	Selector generating a continuous stream of dates separated by a constant step.
FixedTransformProvider	Transform provider using fixed transform.
FixedTroposphericDelay	A static tropospheric model that interpolates the actual tropospheric delay based on values read from a configuration file (tropospheric-delay.txt) via the DataProvidersManager.
FootprintOverlapDetector	Detector triggered by geographical region entering/leaving a spacecraft sensor Field Of View.
ForceModel	This interface represents a force modifying spacecraft motion.
ForceModelContext	Base class for dsst force models attributes containers.
Frame	Tridimensional references frames class.
FrameAdapter	Adapter from Frame to ExtendedPVCoordinatesProvider.
FrameAlignedProvider	This class handles an attitude provider aligned with a frame or a fixed offset to it.
FrameAncestorException	This class is the base class for exception thrown by the UpdatableFrame.updateTransform method.
FrameFacade	Facade in front of several frames types in CCSDS messages.
Frames	A collection of commonly used Frames.
FramesFactory	Factory for predefined reference frames.
Frequency	Enumerate for GNSS frequencies.
FrequencyPattern	Pattern for GNSS antenna model on one frequency.
FunctionalDetector	A detector that implements the FunctionalDetector.g(SpacecraftState) function using a lambda that can be set using FunctionalDetector.withFunction(ToDoubleFunction).
FundamentalNutationArguments	Class computing the fundamental arguments for nutation and tides.
Galileo	Attitude providers for Galileo navigation satellites.
GalileoAlmanac	Class for Galileo almanac.
GalileoNavigationMessage	Container for data contained in a Galileo navigation message.
GalileoScale	Galileo system time scale.
GammaMnsFunction	Compute the Γmn,s(γ) function from equation 2.7.1-(13).
GatheringSubscriber	Subscriber that gather all generated measurements in a sorted set.
GeneratedMeasurementSubscriber	Interface for subscribing to generated measurements events.
Generator	Main generator for observed measurements.
Generator	Generation interface for CCSDS messages.
GenericGNSS	Attitude providers for navigation satellites for which no specialized model is known.
GenericTimeStampedCache<T extends TimeStamped>	Generic thread-safe cache for time-stamped data.
GeodeticPoint	Point location relative to a 2D body surface.
GeographicZoneDetector	Detector for entry/exit of a zone defined by geographic boundaries.
Geoid	A geoid is a level surface of the gravity potential of a body.
GeoMagneticElements	Contains the elements to represent a magnetic field at a single point.
GeoMagneticField	Used to calculate the geomagnetic field at a given geodetic point on earth.
GeoMagneticFieldFactory	Factory for different GeoMagneticField models.
GeoMagneticFieldFactory.FieldModel	The currently supported geomagnetic field models.
GeoMagneticFields	Methods for obtaining geomagnetic fields.
GeoMagneticModelLoader	Loads geomagnetic field models from a given input stream.
GeometryFreeCombination	Geometry-free combination.
GeometryFreeCycleSlipDetector	Geometry free cycle slip detectors.
GHIJjsPolynomials	Compute the Gjs, Hjs, Ijs and Jjs polynomials in the equinoctial elements h, k and the direction cosines α and β and their partial derivatives with respect to k, h, α and β.
GHmsjPolynomials	Compute the Gmsj and the Hmsj polynomials in the equinoctial elements h, k and the direction cosines α and β and their partial derivatives with respect to k, h, α and β.
GillFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for GillFieldIntegrator.
GillIntegratorBuilder	Builder for GillIntegrator.
GlobalIonosphereMapModel	Global Ionosphere Map (GIM) model.
GlobalMappingFunctionModel	The Global Mapping Function model for radio techniques.
GlobalPressureTemperature	The Global Pressure and Temperature model.
GlobalPressureTemperature2	The Global Pressure and Temperature 2 (GPT2) model.
GlobalPressureTemperature2Model	Deprecated.
GlobalPressureTemperature2w	The Global Pressure and Temperature 2w (GPT2w) model.
GlobalPressureTemperature3	The Global Pressure and Temperature 3 (GPT3) model.
GlobalPressureTemperatureModel	Deprecated. as of 12.1, replaced by GlobalPressureTemperature
Glonass	Attitude providers for Glonass navigation satellites.
GLONASSAlmanac	This class holds a GLONASS almanac as read from .agl files.
GLONASSAnalyticalPropagator	This class aims at propagating a GLONASS orbit from GLONASSOrbitalElements.
GLONASSAnalyticalPropagatorBuilder	This nested class aims at building a GLONASSAnalyticalPropagator.
GLONASSDate	Container for date in GLONASS form.
GLONASSEphemeris	Class for GLONASS ephemeris used by the GLONASSNumericalPropagator.
GLONASSNavigationMessage	Container for data contained in a Glonass navigation message.
GLONASSNumericalPropagator	This class propagates GLONASS orbits using numerical integration.
GLONASSNumericalPropagatorBuilder	This nested class aims at building a GLONASSNumericalPropagator.
GLONASSOrbitalElements	This interface provides the minimal set of orbital elements needed by the GLONASSAnalyticalPropagator and the GLONASSNumericalPropagator.
GlonassSatelliteChannel	Container for association between GLONASS satellites and frequency channels (f = f₀ + k Δf with k ranging-7 to +6).
GLONASSScale	GLONASS time scale.
GlonassUserRangeAccuracy	Enumerate for GLONASS User Range Accuracy.
GMSTScale	Greenwich Mean Sidereal Time.
GNSSAttitudeProvider	Attitude providers for navigation satellites.
GNSSClockElements	This interface provides the minimal set of orbital elements needed by the ClockCorrectionsProvider.
GNSSConstants	Set of useful physical constants used in Global Navigation Satellite Systems (GNSS).
GnssData	GNSS data retrieved from Ntrip caster.
GNSSDate	Container for date in GNSS form.
GNSSOrbitalElements	This interface provides the minimal set of orbital elements needed by the GNSSPropagator.
GNSSPropagator	Common handling of AbstractAnalyticalPropagator methods for GNSS propagators.
GNSSPropagatorBuilder	This nested class aims at building a GNSSPropagator.
GnssSignal	Intermediate level interface for radio waves related to GNSS common frequency.
GPSAlmanac	This class holds a GPS almanac as read from SEM or YUMA files.
GPSBlockIIA	Attitude providers for GPS block IIA navigation satellites.
GPSBlockIIF	Attitude providers for GPS block IIF navigation satellites.
GPSBlockIIR	Attitude providers for GPS block IIR navigation satellites.
GPSCivilianNavigationMessage	Container for data contained in a GPS navigation message.
GPSLegacyNavigationMessage	Container for data contained in a GPS navigation message.
GPSScale	GPS time scale.
GraggBulirschStoerIntegratorBuilder	Builder for GraggBulirschStoerIntegrator.
GRAPHICCombination	GRoup And Phase Ionospheric Calibration (GRAPHIC) combination.
GravityFieldFactory	Factory used to read gravity field files in several supported formats.
GravityFields	Defines methods for obtaining gravity fields.
GRGSFormatReader	Reader for the GRGS gravity field format.
GroundAtNightDetector	Detector for ground location being at night.
GroundFieldOfViewDetector	Finder for satellite entry/exit events with respect to a sensor Field Of View attached to an arbitrary frame.
GroundPointing	Base class for ground pointing attitude providers.
GroundPointingAttitudeModifier	Abstract class for attitude provider modifiers using an underlying ground pointing law.
GroundReceiverCommonParametersWithDerivatives	Common intermediate parameters used to estimate measurements where receiver is a ground station.
GroundReceiverCommonParametersWithoutDerivatives	Common intermediate parameters used to estimate measurements where receiver is a ground station.
GroundReceiverMeasurement<T extends GroundReceiverMeasurement<T>>	Base class modeling a measurement where receiver is a ground station.
GroundStation	Class modeling a ground station that can perform some measurements.
GTODProvider	Greenwich True Of Date Frame, also known as True of Date Rotating frame (TDR) or Greenwich Rotating Coordinate frame (GCR).
GzipFilter	Filter for gzip compressed data.
HaloOrbit	Class calculating different parameters of a Halo Orbit.
HaloXZPlaneCrossingDetector	Detector for XZ Plane crossing.
HansenTesseralLinear	Hansen coefficients K(t,n,s) for t!=0 and n < 0.
HansenThirdBodyLinear	Hansen coefficients K(t,n,s) for t=0 and n > 0.
HansenUtilities	Utilities class.
HansenZonalLinear	Hansen coefficients K(t,n,s) for t=0 and n < 0.
HarmonicAccelerationModel	Harmonic acceleration model.
HarrisPriester	This atmosphere model is the realization of the Modified Harris-Priester model.
HatanakaCompressFilter	Decompression filter for Hatanaka compressed RINEX files.
Header	Header of a CCSDS Navigation Data Message.
HeaderKey	Keywords allowed in Header.
HeaderProcessingState	ProcessingState for NDM header.
HeightDependentPressureTemperatureHumidityConverter	Converter for weather parameters that change with height.
HelmertTransformation	Transformation class for geodetic systems.
HelmertTransformation.Predefined	Enumerate for predefined Helmert transformations.
HexadecimalSequenceEncodedMessage	Encoded message as an hexadecimal characters sequence.
HighamHall54FieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for HighamHall54Integrator.
HighamHall54IntegratorBuilder	Builder for HighamHall54Integrator.
HolmesFeatherstoneAttractionModel	This class represents the gravitational field of a celestial body.
IAUPole	Interface for IAU pole and prime meridian orientations.
ICGEMFormatReader	Reader for the ICGEM gravity field format.
IdentityConverter	Identity converter for Range Units.
IERSConventions	Supported IERS conventions.
IERSConventions.NutationCorrectionConverter	Interface for functions converting nutation corrections between δΔψ/δΔε to δX/δY.
IgsSsrDataField	Enum containing all intermediate level data fields that can be parsed to build an IGS SSR message.
IgsSsrMessagesParser	Parser for SSR encoded messages.
IgsSsrMessageType	Enum containing the supported IGS SSR messages types.
IGSUtils	Utility for IGS files.
ILRSHeader	Container for common data contains in International Laser Ranging Service (ILRS) files header.
ImmutableFieldTimeStampedCache<T extends FieldTimeStamped<KK>,KK extends CalculusFieldElement<KK>>	A cache of TimeStamped data that provides concurrency through immutability.
ImmutableTimeStampedCache<T extends TimeStamped>	A cache of TimeStamped data that provides concurrency through immutability.
ImpulseManeuver	Impulse maneuver model.
Inertia	Container for inertia of a 3D object.
Inertia	Inertia.
InertiaAxis	Container for inertial axis.
InertiaKey	Keys for inertia entries.
InertialForces	Inertial force model.
InputStreamEncodedMessage	Encoded message from an input stream.
IntegerBootstrapping	Bootstrapping engine for ILS problem solving.
IntegerLeastSquareComparator	Comparator for IntegerLeastSquareSolution instance.
IntegerLeastSquareSolution	Class holding a solution to an Integer Least Square problem.
IntegerLeastSquareSolver	Interface for algorithms solving integer least square problems.
IntegratedEphemeris	This class stores sequentially generated orbital parameters for later retrieval.
IntegrationReference	Relationship between time tag and integration interval.
IntelsatElevenElements	This class is a container for a single set of Intelsat's 11 Elements data.
IntelsatElevenElementsPropagator	This class provides elements to propagate Intelsat's 11 elements.
InterpolatingTransformProvider	Transform provider using thread-safe interpolation on transforms sample.
InterpolationGrid	Interface for interpolation grids.
InterpolationMethod	OEM interpolation method.
InterpolationTableLoader	Used to read an interpolation table from a data file.
InterSatDirectViewDetector	Detector for inter-satellites direct view (i.e.
InterSatellitesOneWayRangeRate	One way range-rate measurement between two satellites.
InterSatellitesOneWayRangeRateBuilder	Builder for InterSatellitesOneWayRangeRate measurements.
InterSatellitesPhase	Phase measurement between two satellites.
InterSatellitesPhaseAmbiguityModifier	Deprecated. as of 12.1 ambiguity is managed directly by raw measurements InterSatellitesPhase
InterSatellitesPhaseBuilder	Builder for InterSatellitesPhase measurements.
InterSatellitesRange	One-way or two-way range measurements between two satellites.
InterSatellitesRangeBuilder	Builder for InterSatellitesRange measurements.
InterSatellitesWindUp	Modifier for wind-up effect in GNSS inter-satellites phase measurements.
InterSatellitesWindUpFactory	Factory for wind-up modifiers.
IntervalEventTrigger<T extends AbstractDetector<T>>	Maneuver triggers based on a single event detector that defines firing intervals.
IodGauss	Gauss angles-only Initial Orbit Determination (IOD) algorithm.
IodGibbs	Gibbs position-based Initial Orbit Determination (IOD) algorithm.
IodGooding	Gooding angles only Initial Orbit Determination (IOD) algorithm, assuming Keplerian motion.
IodLambert	Lambert position-based Initial Orbit Determination (IOD) algorithm, assuming Keplerian motion.
IodLaplace	Laplace angles-only Initial Orbit Determination (IOD) algorithm, assuming Keplerian motion.
IonosphereBaseMessage	Base container for data contained in a ionosphere message.
IonosphereBDGIMMessage	Container for data contained in a ionosphere BDGIM message.
IonosphereFreeCombination	Ionosphere-free combination.
IonosphereKlobucharMessage	Container for data contained in a ionosphere Klobuchar message.
IonosphereNequickGMessage	Container for data contained in a ionosphere Nequick G message.
IonosphericCorrectionType	Ionospheric correction type.
IonosphericMappingFunction	Interface for mapping functions used in the ionospheric delay computation.
IonosphericModel	Defines a ionospheric model, used to calculate the path delay imposed to electro-magnetic signals between an orbital satellite and a ground station.
IRNSSAlmanac	Class for IRNSS almanac.
IRNSSNavigationMessage	Container for data contained in an IRNSS navigation message.
IRNSSScale	IRNSS time scale (also called IRNWT for IRNSS NetWork Time).
IsotropicDrag	This class models isotropic drag effects.
IsotropicRadiationClassicalConvention	This class represents the features of a simplified spacecraft.
IsotropicRadiationCNES95Convention	This class represents the features of a simplified spacecraft.
IsotropicRadiationSingleCoefficient	This class represents the features of a simplified spacecraft.
ITRFVersion	Enumerate for ITRF versions.
ITRFVersion.Converter	Specialized transform provider between ITRF frames.
ITRFVersionLoader	Loader for ITRF version configuration file.
ITRFVersionLoader.ITRFVersionConfiguration	ITRF version configuration entry.
ItrfVersionProvider	Interface for retrieving the ITRF version for a given set of EOP data.
J2DifferentialEffect	Analytical model for J2 effect.
J2OnlyPerturbation	J2-only force model.
J2SquaredModel	Semi-analytical J2-squared model.
JacobianPropagatorConverter	Propagator converter using the real Jacobian.
JacobiPolynomials	Provider of the Jacobi polynomials Plv,w.
JB2008	This is the realization of the Jacchia-Bowman 2008 atmospheric model.
JB2008InputParameters	Interface for solar activity and magnetic activity data.
JB2008SpaceEnvironmentData	This class provides a container for the solar indices data required by the JB2008 atmospheric model.
JPLEphemeridesLoader	Loader for JPL ephemerides binary files (DE 4xx) and similar formats (INPOP 06/08/10).
JPLEphemeridesLoader.EphemerisType	List of supported ephemerides types.
JPLEphemeridesLoader.RawPVProvider	Interface for raw position-velocity retrieval.
KalmanEstimation	Interface for accessing Kalman filter estimations.
KalmanEstimator	Implementation of a Kalman filter to perform orbit determination.
KalmanEstimatorBuilder	Builder for a Kalman filter estimator.
KalmanEstimatorUtil	Utility class for Kalman Filter.
KalmanModel	Class defining the process model dynamics to use with a KalmanEstimator.
KalmanObserver	Observer for Kalman filter estimations.
KeplerianAnomalyUtility	Utility methods for converting between different Keplerian anomalies.
KeplerianElements	Container for Keplerian elements.
KeplerianElementsKey	Keys for Keplerian elements entries.
KeplerianMotionCartesianUtility	Utility class to predict position and velocity under Keplerian motion, using lightweight routines based on Cartesian coordinates.
KeplerianOrbit	This class handles traditional Keplerian orbital parameters.
KeplerianPropagator	Simple Keplerian orbit propagator.
KeplerianPropagatorBuilder	Builder for Keplerian propagator.
KinematicTransform	A transform that only includes translation and rotation as well as their respective rates.
KlobucharIonoCoefficientsLoader	Loads Klobuchar-Style ionospheric coefficients a given input stream.
KlobucharIonoModel	Klobuchar ionospheric delay model.
KnockeRediffusedForceModel	The Knocke Earth Albedo and IR emission force model.
KvnGenerator	Generator for Key-Value Notation CCSDS messages.
KvnLexicalAnalyzer	Lexical analyzer for Key-Value Notation CCSDS messages.
KvnStructureKey	Keys for FileFormat.KVN format structure.
KvnStructureProcessingState	ProcessingState for structure of FileFormat.KVN CCSDS Messages.
L1Frame	Class to create a L1 centered frame with L1TransformProvider.
L1TransformProvider	L1 Transform provider for a frame on the L1 Lagrange point of two celestial bodies.
L2Frame	Class to create a L2 centered frame with L2TransformProvider.
Laas2015	Compute the probability of collision using the method described in : "SERRA, Romain, ARZELIER, Denis, JOLDES, Mioara, et al.
LagrangianPoints	Enumerate for selecting which Lagrangian Point to consider in different classes.
LambdaMethod	Decorrelation/reduction engine for LAMBDA method.
LatitudeCrossingDetector	Detector for geographic latitude crossing.
LatitudeExtremumDetector	Detector for geographic latitude extremum.
LatitudeRangeCrossingDetector	Detector for geographic latitude crossing.
LazyLoadedCelestialBodies	This class lazily loads auxiliary data when it is needed by a requested body.
LazyLoadedDataContext	A data context that aims to match the behavior of Orekit 10.0 regarding auxiliary data.
LazyLoadedEop	Loads Earth Orientation Parameters (EOP) from a configured set of EopHistoryLoaders on demand.
LazyLoadedFrames	This class lazily loads auxiliary data when it is needed by a requested frame.
LazyLoadedGeoMagneticFields	Loads magnetic fields on request and can be configured after creation.
LazyLoadedGravityFields	Loads gravity fields when first requested and can be configured until then.
LazyLoadedTimeScales	An implementation of TimeScales that loads auxiliary data, leap seconds and UT1-UTC, when it is first accessed.
LeastSquaresTleGenerationAlgorithm	Least squares method to generate a usable TLE from a spacecraft state.
LegacyNavigationMessage	Container for data contained in a GPS/QZNSS legacy navigation message.
LegendrePolynomials	Computes the Pnm(t) coefficients.
LenseThirringRelativity	Lense-Thirring post-Newtonian correction force due to general relativity.
LexicalAnalyzer	Interface for CCSDS messages lexical analysis.
LexicalAnalyzerSelector	Utility class for selecting either XmlLexicalAnalyzer or KvnLexicalAnalyzer depending on data first bytes.
LibrationOrbit	Base class for libration orbits.
LibrationOrbitFamily	Enumerate for Libration Orbit family.
LibrationOrbitType	Enumerate for Libration Orbit type.
LightFluxModel	Interface describing flux models from a light source, including shadowing effects from occulting bodies.
LineOrientedFilteringReader	Base class for implementing line-oriented data filtering readers.
LnsCoefficients	Compute the Lns(γ).
LocalizedException	This interface specified methods implemented by localized exception classes.
LocalMagneticFieldFrame	This class handles a magnetic field variation attitude provider.
LocalMagneticFieldFrame.LOFBuilderVector	Enum defining how the +j axis of the local orbital frame will be defined.
LocalOrbitalFrame	Class for frames moving with an orbiting satellite.
LOF	Interface for local orbital frame.
LofOffset	Attitude law defined by fixed Roll, Pitch and Yaw angles (in any order) with respect to a local orbital frame.
LofOffsetPointing	This class provides a default attitude provider.
LOFType	Enumerate for different types of Local Orbital Frames.
LongitudeCrossingDetector	Detector for geographic longitude crossing.
LongitudeExtremumDetector	Detector for geographic longitude extremum.
LongitudeRangeCrossingDetector	Detector for geographic longitude crossing.
LoveNumbers	Container for Love numbers.
Loxodrome	Perform calculations on a loxodrome (commonly, a rhumb line) on an ellipsoid.
LoxodromeArc	Loxodrome defined by a start and ending point.
LutherFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for LutherFieldIntegrator.
LutherIntegratorBuilder	Builder for LutherIntegrator.
LyapunovOrbit	Class calculating different parameters of a Lyapunov Orbit.
MagneticFieldDetector	Detector for Earth magnetic field strength.
ManBasis	Basis of maneuver used in CCSDS Orbit Comprehensive Messages.
Maneuver	Maneuver in an APM file.
Maneuver	Maneuver in an OPM file.
Maneuver	A generic model for maneuvers with finite-valued acceleration magnitude, as opposed to instantaneous changes in the velocity vector which are defined via detectors (in ImpulseManeuver and FieldImpulseManeuver).
ManeuverFieldType	Maneuver field type used in CCSDS Orbit Comprehensive Messages.
ManeuverKey	Keys for APM maneuver entries.
ManeuverKey	Keys for OPM maneuver entries.
ManeuverTriggers	Generic interface for the maneuver triggers used in a Maneuver.
ManeuverTriggersResetter	Resetter for maneuver triggers.
Maneuvrable	Maneuvrable possibilities used in CCSDS Conjunction Data Messages.
MappingFunction	Deprecated. as of 12.1, replaced by TroposphereMappingFunction
MariniMurray	The Marini-Murray tropospheric delay model for laser ranging.
MariniMurrayModel	Deprecated. as of 12.1, replaced by MariniMurray
MarshallSolarActivityFutureEstimation	This class provides solar activity data needed by atmospheric models: F107 solar flux, Ap and Kp indexes.
MarshallSolarActivityFutureEstimation.StrengthLevel	Strength level of activity.
MarshallSolarActivityFutureEstimationLoader	This class reads solar activity data needed by atmospheric models: F107 solar flux, Ap and Kp indexes.
MarshallSolarActivityFutureEstimationLoader.LineParameters	Container class for Solar activity indexes.
MassDepletionDelay	Generator for effect of delaying mass depletion when delaying a maneuver.
MatricesHarvester	Interface for extracting State Transition Matrices and Jacobians matrices from spacecraft state.
MaxGapInterpolationGrid	Interpolation grid where points obey a maximum time gap.
MeasurementBuilder<T extends ObservedMeasurement<T>>	Interface for generating individual measurements.
MeasurementCombination	Interface for combination of measurements.
MeasurementCombinationFactory	Factory for predefined combination of measurements.
MeasurementDecorator	Decorator adding Measurement API to an ObservedMeasurement.
MeasurementFilter<T extends ObservedMeasurement<T>>	Interface for measurement pre-processing filter.
MeasurementType	Enumerate for measurement type.
MedianDate	Generator for one column of a Jacobian matrix for special case of maneuver median date.
MelbourneWubbenaCombination	Melbourne-Wübbena combination.
MendesPavlisModel	The Mendes - Pavlis tropospheric delay model for optical techniques.
MessageObserver	Interface for objects that needs to be notified when new encoded messages are available.
MessageParser<T>	Parser for CCSDS messages.
MessagesParser	Parser for IGS encoded messages.
MessageType	Interface for encoded message types.
MessageVersionXmlTokenBuilder	Builder for the root element with CCSDS message version.
MessageWriter<H extends Header,S extends Segment<?,?>,F extends NdmConstituent<H,S>>	Interface for writing Navigation Data Message (NDM) files.
Metadata	This class gathers the meta-data present in the Navigation Data Message (ADM, ODM and TDM).
MetadataKey	Keys for NDM Metadata entries.
MidpointFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for MidpointFieldIntegrator.
MidpointIntegratorBuilder	Builder for MidpointIntegrator.
ModelObserver	Observer for model calls.
ModifiedFrame	A reference frame created from the REF_FRAME and CENTER_NAME is a CCSDS OPM, OMM, or OEM file.
ModifiedHopfieldModel	The modified Hopfield model.
ModifiedLambdaMethod	Decorrelation/reduction engine for Modified LAMBDA method.
ModifiedSaastamoinenModel	The modified Saastamoinen model.
ModifierGradientConverter	Converter for states and parameters arrays.
Month	Enumerate representing a calendar month.
MultipleShooter	Multiple shooting method applicable for trajectories, in an ephemeris model.
MultipleShooting	Interface for Multiple shooting methods.
MultiplexedMeasurement	Class multiplexing several measurements as one.
MultiplexedMeasurementBuilder	Builder for MultiplexedMeasurement measurements.
MultiSatFixedStepHandler	This interface is a space-dynamics aware fixed step handler for multi-sat propagation.
MultiSatStepHandler	This interface is a space-dynamics aware step handler for multi-sat propagation.
MultisatStepNormalizer	This class wraps an object implementing MultiSatFixedStepHandler into a MultiSatStepHandler.
NadirPointing	This class handles nadir pointing attitude provider.
NarrowLaneCombination	Narrow-Lane combination.
NavigationSystem	Enumerate for navigation system in DataStreamRecord.
NbsNrcSteamTable	Steam table from US National Bureau of Standards (NBS) and National Research Council (NRC) of Canada.
Ndm	CCSDS Navigation Data Message.
NdmConstituent<H extends Header,S extends Segment<?,?>>	Constituents of a CCSDS Navigation Data Message.
NdmParser	A parser for the CCSDS NDM (Navigation Data Message).
NdmWriter	Writer for CCSDS Navigation Data Message.
NegateDetector	An event detector that negates the sign on another event detector's g function.
NeQuickModel	NeQuick ionospheric delay model.
NetworkCrawler	Provider for data files directly fetched from network.
NetworkRecord	Network record in source table.
NewcombOperators	Implementation of the Modified Newcomb Operators.
NewtonianAttraction	Force model for Newtonian central body attraction.
NiellMappingFunctionModel	The Niell Mapping Function model for radio wavelengths.
NodeDetector	Finder for node crossing events.
NormalizedSphericalHarmonicsProvider	Interface used to provide normalized spherical harmonics coefficients.
NormalizedSphericalHarmonicsProvider.NormalizedSphericalHarmonics	The normalized geopotential coefficients at a specific instance in time.
NRLMSISE00	This class implements the mathematical representation of the 2001 Naval Research Laboratory Mass Spectrometer and Incoherent Scatter Radar Exosphere (NRLMSISE-00) of the MSIS® class model.
NRLMSISE00InputParameters	Container for solar activity data, compatible with NRLMSISE-00 atmosphere model.
NsgfV00Filter	Filter for some non-official files from CDDIS.
NtripClient	Source table for ntrip streams retrieval.
NumericalPropagator	This class propagates orbits using numerical integration.
NumericalPropagatorBuilder	Builder for numerical propagator.
ObjectType	Object type used in CCSDS Orbit Comprehensive Messages.
ObservableSatellite	Class modeling a satellite that can be observed.
Observation	The Observation class contains the data from an observation line.
ObservationData	Observation Data.
ObservationDataSet	Observation Data set.
ObservationsBlock	The Observations Block class contain metadata and the list of observation data lines.
ObservationTimeScale	Observation time scales.
ObservationType	Keys for TDM observations entries.
ObservationType	Enumerate for all the Observation Types for Rinex 2 and 3.
ObservedMeasurement<T extends ObservedMeasurement<T>>	Interface for measurements used for orbit determination.
OccultationEngine	Computation engine for occultation events.
OccultationEngine.FieldOccultationAngles<T extends CalculusFieldElement<T>>	Container for occultation angles.
OccultationEngine.OccultationAngles	Container for occultation angles.
OceanLoadDeformationCoefficients	Supported Ocean load Deformation coefficients (Love numbers k'i).
OceanLoading	Modeling of displacement of reference points due to ocean loading.
OceanLoadingCoefficients	Site specific coefficients for ocean loading.
OceanLoadingCoefficientsBLQFactory	Factory for ocean loading coefficients, using Onsala Space Observatory files in BLQ format.
OceanLoadingCoefficientsBlqParser	Parser for ocean loading coefficients, using Onsala Space Observatory files in BLQ format.
OceanTides	Ocean tides force model.
OceanTidesReader	Reader for ocean tides coefficients.
OceanTidesWave	Container for ocen tides coefficients for one tide wave.
Ocm	This class gathers the informations present in the Orbit Comprehensive Message (OCM).
OcmData	Data container for Orbit Comprehensive Messages.
OcmDataSubStructureKey	Keywords for OCM data sub-structure.
OcmElements	Data elements types used in CCSDS Orbit Comprehensive Messages.
OcmMetadata	Meta-data for Orbit Comprehensive Message.
OcmMetadataKey	Keys for OCM container entries.
OcmParser	A parser for the CCSDS OCM (Orbit Comprehensive Message).
OcmSatelliteEphemeris	OCM ephemeris blocks for a single satellite.
OcmWriter	Writer for CCSDS Orbit Comprehensive Message.
ODEIntegratorBuilder	This interface is the top-level abstraction to build first order integrators for propagators conversion.
OdmCommonMetadata	Common metadata for Orbit Parameter/Ephemeris/Mean Messages.
OdMethodFacade	Facade in front of several orbit determination methods in CCSDS messages.
OdMethodType	Type of orbit determination method used in CCSDS Orbit Comprehensive Messages.
OdmHeader	Header of a CCSDS Orbit Data Message.
OdmMetadata	This class gathers the meta-data present in the Orbital Data Message (ODM).
OdmMetadataKey	Keys for ODM metadata entries.
OdmParser<T extends NdmConstituent<OdmHeader,?>,P extends OdmParser<T,?>>	Common parser for Orbit Parameter/Ephemeris/Mean/Comprehensive Messages.
ODParameters	Container for OD parameters data block.
ODParametersKey	Keys for CDM OD parameters entries.
ODParametersWriter	Writer for OD parameters data block for CCSDS Conjunction Data Messages.
Oem	This class stores all the information of the OEM File parsed by OEMParser.
OemData	The Ephemerides data blocks class contain list of orbital data points.
OemMetadata	Metadata for Orbit Ephemeris Messages.
OemMetadataKey	Keys for OEM container entries.
OemParser	A parser for the CCSDS OEM (Orbit Ephemeris Message).
OemSatelliteEphemeris	OEM ephemeris blocks for a single satellite.
OemSegment	The Ephemerides Blocks class contain metadata, the list of ephemerides data lines and optional covariance matrices (and their metadata).
OemWriter	A writer for Orbit Ephemeris Message (OEM) files.
OffsetModel	TAI UTC offset model.
Omm	This class gathers the informations present in the Orbital Mean-Elements Message (OMM).
OmmData	Container for Orbit Mean-elements Message data.
OmmMetadata	Metadata for Orbit Mean Messages.
OmmMetadataKey	Keys for OMM container entries.
OmmParser	A parser for the CCSDS OMM (Orbiter Mean-Elements Message).
OmmTle	Container for TLE data.
OmmTleKey	Keys for TLE entries.
OmmWriter	Writer for CCSDS Orbit Mean Mean-Elements Message.
OnBoardAntennaInterSatellitesPhaseModifier	On-board antenna offset effect on inter-satellites phase measurements.
OnBoardAntennaInterSatellitesRangeModifier	On-board antenna offset effect on inter-satellites range measurements.
OnBoardAntennaOneWayGNSSPhaseModifier	On-board antenna offset effect on one-way GNSS phase measurements.
OnBoardAntennaOneWayGNSSRangeModifier	On-board antenna offset effect on one-way GNSS range measurements.
OnBoardAntennaTurnAroundRangeModifier	On-board antenna offset effect on turn around range measurements.
OnBoardCommonParametersWithDerivatives	Common intermediate parameters used to estimate measurements where receiver is a satellite.
OnBoardCommonParametersWithoutDerivatives	Common intermediate parameters used to estimate measurements where receiver is a satellite.
OneAxisEllipsoid	Modeling of a one-axis ellipsoid.
OneDVariation	Interpolator for 1D phase center variation data.
OneWayGNSSPhase	One-way GNSS phase measurement.
OneWayGNSSPhaseAmbiguityModifier	Deprecated. as of 12.1 ambiguity is managed directly by raw measurements OneWayGNSSPhase
OneWayGNSSPhaseBuilder	Builder for OneWayGNSSPhase measurements.
OneWayGNSSRange	One-way GNSS range measurement.
OneWayGNSSRangeBuilder	Builder for OneWayGNSSRange measurements.
OneWayGNSSRangeRate	One-way GNSS range rate measurement.
OneWayGNSSRangeRateBuilder	Builder for OneWayGNSSRangeRate measurements.
OnOff	On/Off status for various elements.
Opm	This class gathers the informations present in the Orbital Parameter Message (OPM).
OpmData	Container for Orbit Parameter Message data.
OpmParser	A parser for the CCSDS OPM (Orbit Parameter Message).
OpmWriter	Writer for CCSDS Orbit Parameter Message.
OpsStatus	Operational status used in CCSDS Orbit Comprehensive Messages.
Orbit	This class handles orbital parameters.
OrbitBlender	Orbit blender.
OrbitCategory	Orbit category used in CCSDS Orbit Comprehensive Messages.
OrbitCorrection	Container for SSR orbit correction data.
OrbitCovariance	Covariance entry.
OrbitCovarianceHistory	Covariance history.
OrbitCovarianceHistoryMetadata	Metadata for covariance history.
OrbitCovarianceHistoryMetadataKey	Keys for covariance history container entries.
OrbitDetermination	Orbit determination data.
OrbitDeterminationKey	Keys for orbit determination data entries.
OrbitElementsType	Orbit element set type used in CCSDS Orbit Comprehensive Messages.
OrbitHermiteInterpolator	Class using a Hermite interpolator to interpolate orbits.
OrbitManeuver	Maneuver entry.
OrbitManeuverHistory	Maneuver history.
OrbitManeuverHistoryMetadata	Metadata for maneuver history.
OrbitManeuverHistoryMetadataKey	Keys for maneuver history container entries.
OrbitPhysicalProperties	Spacecraft physical properties.
OrbitPhysicalPropertiesKey	Keys for physical properties data entries.
OrbitRelativeFrame	Frames used in CCSDS Orbit Data Messages.
OrbitType	Enumerate for Orbit and FieldOrbit parameters types.
Ordering	Keys for OrbitCovariance elements ordering.
OrekitAttitudeEphemerisFile	A class for encapsulating Orekit propagators within an AttitudeEphemerisFile complaint object that makes for easy serialization to external ephemeris formats like AEM.
OrekitAttitudeEphemerisFile.OrekitAttitudeEphemerisSegment	Ephemeris segment.
OrekitAttitudeEphemerisFile.OrekitSatelliteAttitudeEphemeris	Inner class of OrekitAttitudeEphemerisFile that defines the OrekitAttitudeEphemerisFile.OrekitSatelliteAttitudeEphemeris corresponding object for this ephemeris type.
OrekitConfiguration	Utility class for setting global configuration parameters.
OrekitEphemerisFile	A class for encapsulating Orekit propagators within an EphemerisFile complaint object that makes for easy serialization to external ephemeris formats like OEM.
OrekitEphemerisFile.OrekitEphemerisSegment	Ephemeris segment.
OrekitEphemerisFile.OrekitSatelliteEphemeris	Inner class of OrekitEphemerisFile that defines the OrekitEphemerisFile.OrekitSatelliteEphemeris corresponding object for this ephemeris type.
OrekitException	This class is the base class for all specific exceptions thrown by the Orekit classes.
OrekitFixedStepHandler	This interface is a space-dynamics aware fixed size step handler.
OrekitIllegalArgumentException	Extension of IllegalArgumentException with localized message.
OrekitIllegalStateException	Extension of IllegalStateException with localized message.
OrekitInternalError	Extension of Runtime with localized message for internal errors only.
OrekitIOException	Extension of IOException with localized message.
OrekitMessages	Enumeration for localized messages formats.
OrekitParseException	Extension of ParseException with localized message.
OrekitStepHandler	This interface is a space-dynamics aware step handler.
OrekitStepInterpolator	This interface is a space-dynamics aware step interpolator.
OrekitStepNormalizer	This class wraps an object implementing OrekitFixedStepHandler into a OrekitStepHandler.
OrphanFrame	Prototype frame that can be built from leaf to roots and later attached to a tree.
OsculatingToAveragedConverter<T extends AveragedOrbitalState>	Interface for osculating-to-averaged converters.
OsculatingToBrouwerLyddaneConverter	Class for osculating-to-averaged conversion according to Brouwer-Lyddane theory.
OsculatingToDSST6X0Converter	Class for osculating-to-averaged conversion according to DSST theory, using 6 zonal harmonics as the only perturbations.
OsculatingToEcksteinHechlerConverter	Class for osculating-to-averaged conversion according to Eckstein-Hechler theory.
OsculatingToMeanElementsConverter	This class converts osculating orbital elements into mean elements.
OsculatingToSGP4Converter	Class for osculating-to-averaged conversion according to "SGP4" theory, meant as the set of models associated to Two-Line Elements.
OutlierFilter<T extends ObservedMeasurement<T>>	Modifier that sets estimated measurement weight to 0 if residual is too far from expected domain.
Panel	Base class representing one panel of a satellite.
ParameterDrivenDateIntervalDetector	Detector for date intervals that may be offset thanks to parameter drivers.
ParameterDriver	Class allowing to drive the value of a parameter.
ParameterDriversList	Class managing several parameter drivers, taking care of duplicated names.
ParameterDriversList.DelegatingDriver	Specialized driver delegating to several other managing the same parameter name.
ParameterDriversProvider	Provider for parameters drivers.
ParameterFunction	Interface representing a scalar function depending on a ParameterDriver.
ParameterObserver	Interface for observing parameters changes.
ParametricAcceleration	This class implements a parametric acceleration.
ParametricModelEffect	Functional interface for parametric models.
ParametricModelEffectGradient	Functional interface for parametric models.
ParsedMessage	Abstract base class for decoded IGS messages.
ParsedUnitsBehavior	Behavior adopted for units that have been parsed from a CCSDS message.
Parser	Parser for units.
ParserBuilder	Builder for all CCSDS Message files parsers.
ParseToken	Token occurring during CCSDS file parsing.
ParseToken.BooleanConsumer	Interface representing instance methods that consume boolean values.
ParseToken.CenterConsumer	Interface representing instance methods that consume center values.
ParseToken.CenterListConsumer	Interface representing instance methods that consume center lists.
ParseToken.CharConsumer	Interface representing instance methods that consume character values.
ParseToken.DateConsumer	Interface representing instance methods that consume date values.
ParseToken.DoubleArrayConsumer	Interface representing instance methods that consume double array.
ParseToken.DoubleConsumer	Interface representing instance methods that consume double values.
ParseToken.DoublyIndexedDoubleConsumer	Interface representing instance methods that consume doubly-indexed double values.
ParseToken.EnumConsumer<T extends Enum<T>>	Interface representing instance methods that consume enum values.
ParseToken.EnumListConsumer<T extends Enum<T>>	Interface representing instance methods that consume lists of enum values.
ParseToken.FrameConsumer	Interface representing instance methods that consume frame values.
ParseToken.IndexedDoubleArrayConsumer	Interface representing instance methods that consume indexed double array values.
ParseToken.IndexedDoubleConsumer	Interface representing instance methods that consume indexed double values.
ParseToken.IndexedIntConsumer	Interface representing instance methods that consume indexed integer values.
ParseToken.IndexedStringConsumer	Interface representing instance methods that consume indexed string values.
ParseToken.IntConsumer	Interface representing instance methods that consume integer values.
ParseToken.IntegerArrayConsumer	Interface representing instance methods that consume integer array.
ParseToken.LabeledDoubleConsumer	Interface representing instance methods that consume labeled double values.
ParseToken.ManeuvrableConsumer	Interface representing instance methods that consume Maneuvrable values.
ParseToken.RotationOrderConsumer	Interface representing instance methods that consume otation order values.
ParseToken.StringConsumer	Interface representing instance methods that consume string values.
ParseToken.StringListConsumer	Interface representing instance methods that consume lists of strings values.
ParseToken.TimeSystemConsumer	Interface representing instance methods that consume time systems values.
ParseToken.UnitListConsumer	Interface representing instance methods that consume units lists values.
ParseToken.VectorConsumer	Interface representing instance methods that consume vector values.
Patera2005	Compute the probability of collision using the method described in :"PATERA, Russell P.
PerfectClockModel	Clock model for perfect clock with constant zero offset.
Perturbations	Perturbation parameters.
PerturbationsKey	Keys for perturbations data entries.
Phase	Class modeling a phase measurement from a ground station.
PhaseAmbiguityModifier	Deprecated. as of 12.1 ambiguity is managed directly by raw measurements Phase
PhaseBias	Container for phase bias data.
PhaseBuilder	Builder for Phase measurements.
PhaseCentersGroundReceiverBaseModifier<T extends GroundReceiverMeasurement<T>>	Ground and on-board antennas offsets effect on range measurements.
PhaseCentersInterSatellitesBaseModifier<T extends AbstractMeasurement<T>>	On-board antenna offset effect on inter-satellites phase measurements.
PhaseCentersOffsetComputer	Compute phase centers offset on an emitter-receiver link.
PhaseCentersOneWayGNSSBaseModifier<T extends AbstractMeasurement<T>>	On-board antenna offset effect on inter-satellites phase measurements.
PhaseCentersPhaseModifier	Ground and on-board antennas offsets effect on phase measurements.
PhaseCentersRangeModifier	Ground and on-board antennas offsets effect on range measurements.
PhaseCenterVariationFunction	Model for antennas phase center variations.
PhaseIonosphericDelayModifier	Class modifying theoretical phase measurement with ionospheric delay.
PhaseMinusCodeCombination	Phase minus Code combination.
PhaseMinusCodeCycleSlipDetector	Phase minus code cycle slip detectors.
PhaseShiftCorrection	Phase Shift corrections.
PhaseTroposphericDelayModifier	Class modifying theoretical phase measurement with tropospheric delay.
PocMethodFacade	Facade in front of several probability of collision methods in CCSDS messages.
PocMethodType	Type of probability of collision method used in CCSDS Conjunction Data Messages.
PointingPanel	Class representing one panel of a satellite, roughly pointing towards some target.
PoissonSeries	Class representing a Poisson series for nutation or ephemeris computations.
PoissonSeries.CompiledSeries	This interface represents a fast evaluator for Poisson series.
PoissonSeriesParser	Parser for Poisson series files.
PoleCorrection	Simple container class for pole correction parameters.
PolygonalFieldOfView	Class representing a spacecraft sensor Field Of View with polygonal shape.
PolygonalFieldOfView.DefiningConeType	Enumerate for cone/polygon relative position.
PolynomialAccelerationModel	Polynomial acceleration model.
PolynomialFunctionMatrix	A quadratic matrix of PolynomialFunction.
PolynomialNutation	Polynomial nutation function.
PolynomialParser	Parser for polynomials in IERS tables.
PolynomialParser.Unit	Unit for the coefficients.
PolynomialThrustSegment	One polynomial segment of a thrust profile.
Position	Class modeling a position only measurement.
PositionAngleBased	This interface represent orbit-like trajectory whose definition is based on a so-called position angle.
PositionAngleDetector	Detector for in-orbit position angle.
PositionAngleType	Enumerate for true, eccentric and mean position angles.
PositionBuilder	Builder for Position measurements.
PostSeismicDeformation	Modeling of displacement of one reference point due to post-seismic effects.
PotentialCoefficientsReader	This abstract class represents a Gravitational Potential Coefficients file reader.
PowerTerm	A container for a term with associated power.
Predefined	Predefined frames provided by Frames.
PredictedEOPHistory	This class extends an EOPHistory for some weeks using fitting.
PressureTemperature	Container for pressure and temperature.
PressureTemperatureHumidity	Container for pressure, temperature, and humidity.
PressureTemperatureHumidityProvider	Interface for providing weather parameters.
ProbabilityOfCollision	Container for values relative to the probability of collision : Value of the probability of collision. Name of the method with which it was computed. Upper and lower limit of the value if the method provides them (such as Laas2015 for example). Flag defining if the probability was maximized in any way (such as Alfriend1999Max for example).
ProcessingState	Interface for processing parsing tokens for CCSDS NDM files.
ProfileThrustPropulsionModel	Thrust propulsion model based on segmented profile.
PropagationType	Enumerate to define the propagation type used by the propagator.
Propagator	This interface provides a way to propagate an orbit at any time.
PropagatorBuilder	This interface is the top-level abstraction to build propagators for conversion.
PropagatorConverter	This interface is the top-level abstraction for propagators conversions.
PropagatorsParallelizer	This class provides a way to propagate simultaneously several orbits.
PropulsionModel	Generic interface for a propulsion model used in a Maneuver.
PsdCorrection	Model for post-seismic deformation corrections.
PsdCorrection.Axis	Enumerate for correction axis.
PsdCorrection.TimeEvolution	Enumerate for correction time evolution.
PV	Class modeling a position-velocity measurement.
PVBuilder	Builder for PV measurements.
PVCoordinates	Simple container for Position/Velocity/Acceleration triplets.
PVCoordinatesProvider	Interface for PV coordinates providers.
QuadraticClockModel	Quadratic clock model.
QuadraticFieldClockModel<T extends CalculusFieldElement<T>>	Quadratic clock model.
QZSSAlmanac	This class holds a QZSS almanac as read from YUMA files.
QZSSCivilianNavigationMessage	Container for data contained in a QZSS navigation message.
QZSSLegacyNavigationMessage	Container for data contained in a QZSS navigation message.
QZSSScale	QZSS time scale.
RadiationForceModel	Interface for radiation-related force models.
RadiationPressureModel	Class representing a light-induced radiation pressure force, by leveraging on a given flux model.
RadiationSensitive	Interface for spacecraft that are sensitive to radiation pressure forces.
RadioWave	Top level interface for radio waves.
Range	Class modeling a range measurement from a ground station.
RangeBuilder	Builder for Range measurements.
RangeIonosphericDelayModifier	Class modifying theoretical range measurement with ionospheric delay.
RangeMode	Type of range tones.
RangeModifierUtil	Utility class modifying theoretical range measurement.
RangeRate	Class modeling one-way or two-way range rate measurement between two vehicles.
RangeRateBuilder	Builder for RangeRate measurements.
RangeRateIonosphericDelayModifier	Class modifying theoretical range-rate measurement with ionospheric delay.
RangeRateModifierUtil	Utility class modifying theoretical range-rate measurement.
RangeRateTroposphericDelayModifier	Class modifying theoretical range-rate measurements with tropospheric delay.
RangeTroposphericDelayModifier	Class modifying theoretical range measurement with tropospheric delay.
RangeUnits	Units of the range observable.
RangeUnitsConverter	Interface for converting Range Units to meters.
RateElementsType	Attitude rate element set type used in CCSDS Attitude Comprehensive Messages.
RawSphericalHarmonicsProvider	Interface used to provide raw spherical harmonics coefficients.
RawSphericalHarmonicsProvider.RawSphericalHarmonics	The raw spherical harmonics at a particular instant.
RecallLastOccurrence	Event handler wrapping another, arbitrary one whilst remembering date of last detection.
ReceiverAntenna	GNSS receiver antenna model.
Record	Record in source table.
RecordAndContinue	Handler that will record every time an event occurs and always return Action.CONTINUE.
RecordAndContinue.Event	A single event detected during propagation.
RecordType	Enumerate for record types in sourcetable.
ReferenceEllipsoid	A Reference Ellipsoid for use in geodesy.
RegionCode	Enumerate for region code.
RegularXmlTokenBuilder	Regular builder using XML elements names and content for tokens.
RelativeDistanceDetector	Detector of specific value for the distance relative to another trajectory (using the Euclidean norm).
RelativisticClockInterSatellitesOneWayRangeRateModifier	Class modifying theoretical range-rate measurement with relativistic frequency deviation.
RelativisticClockInterSatellitesPhaseModifier	Class modifying theoretical inter-satellites phase measurement with relativistic clock correction.
RelativisticClockInterSatellitesRangeModifier	Class modifying theoretical inter-satellites range measurement with relativistic clock correction.
RelativisticClockOneWayGNSSPhaseModifier	Class modifying theoretical one-way GNSS phase measurement with relativistic clock correction.
RelativisticClockOneWayGNSSRangeModifier	Class modifying theoretical one-way GNSS range measurement with relativistic clock correction.
RelativisticClockOneWayGNSSRangeRateModifier	Class modifying theoretical range-rate measurement with relativistic frequency deviation.
RelativisticClockPhaseModifier	Class modifying theoretical phase measurement with relativistic clock correction.
RelativisticClockRangeModifier	Class modifying theoretical range measurement with relativistic clock correction.
RelativisticClockRangeRateModifier	Class modifying theoretical range-rate measurement with relativistic frequency deviation.
RelativisticJ2ClockInterSatellitesPhaseModifier	Class modifying theoretical inter-satellites phase measurements with relativistic J2 clock correction.
RelativisticJ2ClockInterSatellitesRangeModifier	Class modifying theoretical inter-satellites range measurements with relativistic J2 clock correction.
RelativisticJ2ClockOneWayGNSSPhaseModifier	Class modifying theoretical one-way phase measurements with relativistic J2 clock correction.
RelativisticJ2ClockOneWayGNSSRangeModifier	Class modifying one-way GNSS range theoretical measurements with relativistic J2 clock correction.
RelativisticJ2ClockPhaseModifier	Class modifying theoretical phase measurements with relativistic J2 clock correction.
RelativisticJ2ClockRangeModifier	Class modifying theoretical range measurements with relativistic J2 clock correction.
Relativity	Post-Newtonian correction force due to general relativity.
ResidualFilter<T extends ObservedMeasurement<T>>	Residual pre-processing filter.
RevisedChaoMappingFunction	Chao mapping function for radio wavelengths.
RichardsonExpansion	Class implementing the Third-Order Richardson Expansion.
RinexBaseHeader	Base container for Rinex headers.
RinexClock	Represents a parsed clock file from the IGS.
RinexClock.ClockDataType	Clock data type.
RinexClock.Receiver	Represents a receiver or a satellite with its position in the considered frame.
RinexClock.ReferenceClock	Represents a reference clock with its validity time span.
RinexClockParser	A parser for the clock file from the IGS.
RinexComment	Container for comment in RINEX file.
RinexFile<T extends RinexBaseHeader>	Container for Rinex file.
RinexFileType	Enumerate for RINEX files types.
RinexLabels	Labels for Rinex files.
RinexNavigation	Represents a parsed RINEX navigation messages files.
RinexNavigationHeader	Header for Rinex Navigation.
RinexNavigationParser	Parser for RINEX navigation messages files.
RinexObservation	Container for Rinex observation file.
RinexObservationHeader	Container for Rinex observation file header.
RinexObservationParser	Parser for Rinex measurements files.
RinexObservationWriter	Writer for Rinex observation file.
RinexUtils	Utilities for RINEX various messages files.
RotationXmlTokenBuilder	Builder for rotation angles and rates.
Rtcm1019	RTCM 1019 message: GPS Satellite Ephemeris Data.
Rtcm1019Data	Container for RTCM 1019 data.
Rtcm1020	RTCM 1020 message: Glonass Satellite Ephemeris Data.
Rtcm1020Data	Container for RTCM 1020 data.
Rtcm1042	RTCM 1042 message: Beidou Satellite Ephemeris Data.
Rtcm1042Data	Container for RTCM 1042 data.
Rtcm1044	RTCM 1044 message: QZSS Satellite Ephemeris Data.
Rtcm1044Data	Container for RTCM 1044 data.
Rtcm1045	RTCM 1045 message: Galileo F/NAV Satellite Ephemeris Data.
Rtcm1045Data	Container for RTCM 1045 data.
Rtcm1057	RTCM 1057 message: GPS Orbit Correction Message.
Rtcm1058	RTCM 1057 message: GPS Clock Correction Message.
Rtcm1060	RTCM 1060 message: GPS Combined Orbit and Clock Correction Message.
Rtcm1063	RTCM 1063 message: GLONASS Orbit Correction Message.
Rtcm1064	RTCM 1064 message: GLONASS Clock Correction Message.
Rtcm1066	RTCM 1066 message: GLONASS Combined Orbit and Clock Correction Message.
Rtcm1240	RTCM 1240 message: Galileo Orbit Correction Message.
Rtcm1241	RTCM 1241 message: Galileo Clock Correction Message.
Rtcm1243	RTCM 1242 message: Combined Galileo Clock Correction Message.
RtcmClockCorrectionData	Container for common data in RTCM clock correction message type.
RtcmCombinedCorrectionData	Container for common data in RTCM combined corrections message type.
RtcmCorrectionData	Container for common data in RTCM corrections message type.
RtcmCorrectionHeader	Container for common data in RTCM Correction Message type header.
RtcmCorrectionMessage<H extends RtcmCorrectionHeader,D extends RtcmCorrectionData>	The RTCM Correction Message types provide elements to calculate GNSS satellite corrections.
RtcmData	Container for common data in RTCM message.
RtcmDataField	Enum containing all intermediate level data fields that can be parsed to build a RTCM message.
RtcmEphemerisData	Container for common data in RTCM ephemeris message type.
RtcmEphemerisMessage<D extends RtcmEphemerisData>	Base class for RTCM ephemeris messages.
RtcmMessage<D extends RtcmData>	Base class for RTCM messages.
RtcmMessagesParser	Parser for RTCM encoded messages.
RtcmMessageType	Enum containing the supported RTCM messages types.
RtcmOrbitCorrectionData	Container for common data in RTCM orbit correction message type.
RtcmOrbitCorrectionHeader	Container for common data in RTCM Orbit Correction Message type header.
RTNCovariance	Container for RTN covariance matrix data.
RTNCovarianceKey	Keys for CDM covariance matrix entries.
RTNCovarianceWriter	Writer for RTN covariance matrix data block for CCSDS Conjunction Data Messages.
SaastamoinenModel	Deprecated. as of 12.1, replaced by ModifiedSaastamoinenModel
SampledClockModel	Offset clock model backed up by a sample.
SatelliteAntenna	GNSS satellite antenna model.
SatelliteClockScale	Scale for on-board clock.
SatelliteSystem	Enumerate for satellite system.
SatelliteType	Enumerate for satellite types.
SatInSystem	Container for satellite system and PRN.
SbasId	Enumerate for the SBAS ids.
SBASNavigationMessage	Container for data contained in a SBAS navigation message.
SBASOrbitalElements	This interface provides the minimal set of orbital elements needed by the SBASPropagator.
SBASPropagator	This class aims at propagating a SBAS orbit from SBASOrbitalElements.
SBASPropagatorBuilder	This nested class aims at building a SBASPropagator.
ScaledConstantThrustPropulsionModel	Thrust propulsion model with parameters (for estimation) represented by scale factors on the X, Y and Z axis of the spacecraft frame.
ScaleFactorCorrection	Scale Factor to be applied.
Scheduler<T extends ObservedMeasurement<T>>	Interface for generating measurements sequences.
ScreenType	Screening type options allowed in CCSDS Conjunction Data Messages.
ScreenVolumeFrame	Screening volume frame possibilities used in CCSDS Conjunction Data Messages.
ScreenVolumeShape	Screening volume shape possibilities used in CCSDS Conjunction Data Messages.
Section	Top level interface for all CCSDS message sections.
SecularAndHarmonic	Class for fitting evolution of osculating orbital parameters.
Segment<M extends Metadata,D extends Data>	NDM segments are (Metadata, Data) pairs.
SemiAnalyticalKalmanEstimator	Implementation of an Extended Semi-analytical Kalman Filter (ESKF) to perform orbit determination.
SemiAnalyticalKalmanEstimatorBuilder	Builder for a Semi-analytical Kalman Filter.
SemiAnalyticalKalmanModel	Process model to use with a SemiAnalyticalKalmanEstimator.
SemiAnalyticalMeasurementHandler	Step handler picking up measurements for both SemiAnalyticalUnscentedKalmanEstimator and SemiAnalyticalKalmanEstimator.
SemiAnalyticalProcess	Interface for both SemiAnalyticalUnscentedKalmanModel and SemiAnalyticalKalmanModel.
SemiAnalyticalUnscentedKalmanEstimator	Implementation of an Unscented Semi-analytical Kalman filter (USKF) to perform orbit determination.
SemiAnalyticalUnscentedKalmanEstimatorBuilder	Builder for an Unscented Semi-analytical Kalman filter estimator.
SemiAnalyticalUnscentedKalmanModel	Class defining the process model dynamics to use with a SemiAnalyticalUnscentedKalmanEstimator.
SEMParser	This class reads SEM almanac files and provides GPS almanacs.
SequentialBatchLSEstimator	Sequential least squares estimator for orbit determination.
SGP4	This class contains methods to compute propagated coordinates with the SGP4 model.
SGP4OrbitalState	Class representing an averaged orbital state as in the TLE-related theory.
ShadowModel	Shadow model for solar radiation pressure.
ShapiroInterSatellitePhaseModifier	Class modifying theoretical inter-satellites phase measurement with Shapiro time delay.
ShapiroInterSatelliteRangeModifier	Class modifying theoretical range measurement with Shapiro time delay.
ShapiroOneWayGNSSPhaseModifier	Class modifying theoretical one-way GNSS phase measurement with Shapiro time delay.
ShapiroOneWayGNSSRangeModifier	Class modifying theoretical range measurement with Shapiro time delay.
ShapiroPhaseModifier	Class modifying theoretical phase measurement with Shapiro time delay.
ShapiroRangeModifier	Class modifying theoretical range measurement with Shapiro time delay.
ShiftingPVCoordinatesProvider	Provider using simple PVCoordinates.shiftedBy(double) shiftedBy} and frame transforms for evolution.
ShiftingTransformProvider	Transform provider using thread-safe shifts on transforms sample.
SHMFormatReader	Reader for the SHM gravity field format.
ShortPeriodicsInterpolatedCoefficient	Interpolated short periodics coefficients.
ShortPeriodTerms	Additive short period terms contributing to the mean to osculating orbit mapping.
ShortTermEncounter2DDefinition	Defines the encounter between two collision object at time of closest approach assuming a short-term encounter model .
ShortTermEncounter2DPOCMethod	Interface common to all short-term encounter probability of collision computing methods.
ShortTermEncounter2DPOCMethodType	This enum stores every probability of collision computing method using the short-term encounter model available in Orekit.
SigmaEigenvectorsCovariance	Container for Sigma/Eigenvectors Covariance data.
SigmaEigenvectorsCovarianceKey	Keys for covariance format entries.
SignalCode	Enumerate for satellite signal code.
SignalInSpaceAccuracy	Signal-In-Space Accuracy (SISA).
SignSemantic	Enumerate for the semantic of the g function sign during measurements generation.
SimpleExponentialAtmosphere	Simple exponential atmospheric model.
SimpleRatioAmbiguityAcceptance	Ambiguity acceptance test based on a ratio of the two best candidates.
SimpleTimeStampedTableParser<T extends TimeStamped>	Parser for simple tables containing time stamped data.
SimpleTimeStampedTableParser.RowConverter<S extends TimeStamped>	Interface for converting a table row into time-stamped data.
SinexEopEntry	Container for EOP entry read in a Sinex file.
SinexLoader	Loader for Solution INdependent EXchange (SINEX) files.
SingleBodyAbsoluteAttraction	Body attraction force model computed as absolute acceleration towards a body.
SingleBodyRelativeAttraction	Body attraction force model computed as relative acceleration towards frame center.
SingleFrequencyHatchFilter	Single frequency Hatch filter.
SingleFrequencySmoother	Handler to perform pseudo-range smoothing using single frequency measurements.
SingleLayerModelMappingFunction	Single Layer Model (SLM) ionospheric mapping function.
SingleParameterFitter	Fitter for one Earth Orientation Parameter.
SlewingPanel	Class representing one panel of a satellite, slewing about an axis at constant rate.
SmallManeuverAnalyticalModel	Analytical model for small maneuvers.
SmoothedObservationDataSet	Container used to store smoothed observation data along with the original data set it originates from.
SmoothFieldOfView	Class representing a spacecraft sensor Field Of View with shape defined by a smooth single loop.
SolarRadiationPressure	Solar radiation pressure force model.
SOLFSMYDataLoader	This class reads solar activity data from SOLFSMY files for the class JB2008SpaceEnvironmentData.
SOLFSMYDataLoader.LineParameters	Container class for Solar activity indexes.
SolidTides	Solid tides force model.
SortedListTrimmer	A trimmer for externally stored chronologically sorted lists.
SourceTable	Source table for ntrip streams retrieval.
SP3	Represents a parsed SP3 orbit file.
SP3Coordinate	A single record of position clock and possibly derivatives in an SP3 file.
SP3CoordinateHermiteInterpolator	Interpolator for SP3 coordinates.
SP3Ephemeris	Single satellite ephemeris from an SP3 file.
SP3FileType	File type indicator.
SP3Header	Header for SP3 files.
SP3OrbitType	Orbit type indicator.
SP3Parser	A parser for the SP3 orbit file format.
SP3Segment	One segment of an SP3Ephemeris.
SP3Utils	Constants for SP3 files.
SP3Writer	Writer for SP3 file.
SpacecraftBodyFrame	Frames used in CCSDS Attitude Data Messages for the spacecraft body.
SpacecraftBodyFrame.BaseEquipment	Equipment on which the frame is located.
SpacecraftParameters	Container for spacecraft parameters.
SpacecraftParametersKey	Keys for ODM spacecraft parameters entries.
SpacecraftParametersWriter	Writer for spacecraft parameters data.
SpacecraftState	This class is the representation of a complete state holding orbit, attitude and mass information at a given date, meant primarily for propagation.
SpacecraftStateInterpolator	Generic class for spacecraft state interpolator.
SphericalHarmonicsProvider	Interface used to provide spherical harmonics coefficients.
SpinStabilized	This class handles a spin stabilized attitude provider.
SpinStabilized	Container for Attitude Parameter Message data lines.
SpinStabilizedKey	Keys for APM spin-stabilized entries.
SsrData	Container for common data in SSR message data.
SsrHeader	Container for common data in SSR messages header.
SsrIgm01	GNSS SSR Orbit Correction Message.
SsrIgm01Data	Container for SSR IGM01 data.
SsrIgm01Header	Container for SSR IGM01 header.
SsrIgm02	GNSS SSR Clock Correction Message.
SsrIgm02Data	Container for SSR IGM02 data.
SsrIgm02Header	Container for SSR IGM02 header.
SsrIgm03	GNSS SSR Combined Orbit and Clock Correction Message.
SsrIgm03Data	Container for SSR IGM03 data.
SsrIgm03Header	Container for SSR IGM03 header.
SsrIgm04	GNSS SSR High Rate Clock Correction Message.
SsrIgm04Data	Container for SSR IGM04 data.
SsrIgm04Header	Container for SSR IGM04 header.
SsrIgm05	GNSS SSR Code Bias Message.
SsrIgm05Data	Container for SSR IGM05 data.
SsrIgm05Header	Container for SSR IGM05 header.
SsrIgm06	GNSS SSR Phase Bias Message.
SsrIgm06Data	Container for SSR IGM06 data.
SsrIgm06Header	Container for SSR IGM06 header.
SsrIgm07	GNSS SSR SSR URA Message.
SsrIgm07Data	Container for SSR IGM07 data.
SsrIgm07Header	Container for SSR IGM07 header.
SsrIgmData	Container for common data in IGS Generic SSR Message type.
SsrIgmHeader	Container for common data in IGS Generic SSR Message type header.
SsrIgmMessage<H extends SsrIgmHeader,D extends SsrIgmData>	The IGS Generic SSR Message types provide elements to calculate GNSS satellite corrections.
SsrIm201	SSR Ionosphere VTEC Spherical Harmonics Message.
SsrIm201Data	Container for SSR IM201 data.
SsrIm201Header	Container for SSR IM201 header.
SsrMessage<H extends SsrHeader,D extends SsrData>	Base class for SSR messages.
SsrUpdateInterval	SSR Update interval.
SsrVtecIonosphericModel	Ionospheric model based on SSR IM201 message.
StartStopEventsTrigger<A extends AbstractDetector<A>,O extends AbstractDetector<O>>	Maneuver triggers based on a pair of event detectors that defines firing start and stop.
StateCovariance	This class is the representation of a covariance matrix at a given date.
StateCovarianceBlender	State covariance blender.
StateCovarianceKeplerianHermiteInterpolator	State covariance Keplerian quintic interpolator.
StateCovarianceMatrixProvider	Additional state provider for state covariance matrix.
StateFunction	Interface representing a vector function depending on SpacecraftState.
StateJacobian	Interface representing the Jacobian of a vector function depending on SpacecraftState.
StateMapper	This class maps between raw double elements and SpacecraftState instances.
StateVector	Container for state vector data.
StateVector	Container for state vector data.
StateVectorKey	Keys for CDM state vector entries.
StateVectorKey	Keys for ODM state vector container entries.
StateVectorWriter	Writer for state vector data for CCSDS Conjunction Data Messages.
StateVectorWriter	Writer for state vector data.
StaticTransform	A transform that only includes translation and rotation.
Station	Station model.
Station.ReferenceSystem	Eccentricity reference system.
StationDisplacement	Interface for computing reference points displacement.
StepHandlerMultiplexer	This class gathers several OrekitStepHandler instances into one.
STKEphemerisFile	STK ephemeris file.
STKEphemerisFile.STKCoordinateSystem	STK coordinate system.
STKEphemerisFile.STKEphemeris	Ephemeris from an STK ephemeris file.
STKEphemerisFile.STKEphemerisSegment	Ephemeris segment from an STK ephemeris file.
STKEphemerisFileParser	Parser of STKEphemerisFiles.
STMEquations	Class calculating the state transition matrix coefficient for CR3BP Computation.
StopOnDecreasing	Handle a detection event and choose what to do next.
StopOnEvent	Event handler which will always return stop as a state.
StopOnIncreasing	Handle a detection event and choose what to do next.
StreamedMessage	Container for streamed messages meta-data.
StreamingAemWriter	A writer for AEM files.
StreamingCpfWriter	A writer for CPF files.
StreamingCpfWriter.HeaderLineWriter	Writer for specific header lines.
StreamingOcmWriter	A writer for OCM files.
StreamingOemWriter	A writer for OEM files.
StreamMonitor	Monitor for retrieving streamed data from one mount point.
SubFrame	Container for sub-frames in a GPS navigation message.
SubFrame1	Container for sub-frames 1.
SubFrame2	Container for sub-frames 2.
SubFrame3	Container for sub-frames 3.
SubFrame45	Base container for sub-frames 4 and 5.
SubFrame4A	Container for sub-frames 4, pages 1, 6, 11, 16 and 21, but also for sub-frames 4, pages 2, 3, 4, 5, 7, 8, and 9 which have a similar structure.
SubFrame4A0	Container for sub-frames 4, pages 1, 6, 11, 16 and 21.
SubFrame4A1	Container for sub-frames 4, pages 2, 3, 4, 5, 7, 8, and 9.
SubFrame4B	Container for sub-frames 4, pages 10, 14, 15, 17.
SubFrame4C	Container for sub-frames 4, page 13.
SubFrame4D	Container for sub-frames 4, page 18.
SubFrame4E	Container for sub-frames 4, page 25.
SubFrame5B	Container for sub-frames 5, page 25.
SubFrameAlmanac	Container for sub-frames 5, page 1-24.
SubFrameDummyAlmanac	Almanac for dummy SV.
SystemTimeOffsetMessage	Container for data contained in a System Time Offset navigation message.
TabulatedLofOffset	This class handles an attitude provider interpolating from a predefined table containing offsets from a Local Orbital Frame.
TabulatedProvider	This class handles an attitude provider interpolating from a predefined table.
TAIScale	International Atomic Time.
TAIUTCDatFilesLoader	Loader for UTC-TAI extracted from tai-utc.dat file from USNO.
TAIUTCDatFilesLoader.Parser	Internal class performing the parsing.
TargetPointing	This class handles target pointing attitude provider.
TCBScale	Barycentric Coordinate Time.
TCGScale	Geocentric Coordinate Time.
TDBScale	Barycentric Dynamic Time.
Tdm	This class stores all the information of the CCSDS Tracking Data Message parsed by TDMParser or TDMXMLParser.
TdmDataKey	Keys for TDM observations entries, except the measurements themselves.
TdmHeader	Header of a CCSDS Tracking Data Message.
TdmMetadata	The TDMMetadata class gathers the meta-data present in the Tracking Data Message (TDM).
TdmMetadataKey	Keys for TDM container entries.
TdmParser	Class for CCSDS Tracking Data Message parsers.
TdmWriter	Writer for CCSDS Tracking Data Message.
TDOA	Class modeling a Time Difference of Arrival measurement with a satellite as emitter and two ground stations as receivers.
TDOABuilder	Builder for TDOA measurements.
TDOAIonosphericDelayModifier	Class modifying theoretical TDOA measurements with ionospheric delay.
TDOATroposphericDelayModifier	Class modifying theoretical TDOA measurements with tropospheric delay.
TectonicsDisplacement	Modeling of displacement of reference points due to plate tectonics.
ThirdBodyAttraction	Third body attraction force model.
ThirdBodyAttractionEpoch	Third body attraction force model.
ThreeEighthesFieldIntegratorBuilder<T extends CalculusFieldElement<T>>	Builder for ThreeEighthesFieldIntegrator.
ThreeEighthesIntegratorBuilder	Builder for ThreeEighthesIntegrator.
ThrustDirectionAndAttitudeProvider	This class is used in to both manage the attitude of the satellite and the direction of thrust.
ThrustDirectionProvider	Interface to compute the thrust direction of a maneuver.
ThrustPropulsionModel	Interface for a thrust-based propulsion model.
TidalDisplacement	Modeling of displacement of reference points due to tidal effects.
Tide	Class representing a tide.
TideSystem	Enumerate for tie systems.
TideSystemProvider	Interface used to provide tide systems.
Tile	Simple data structure for a quadrilateral tile shape on a body surface.
TileAiming	Interface defining the aiming direction of tiles.
TimeComponents	Class representing a time within the day broken up as hour, minute and second components.
TimeConverter	Dates reader/writer.
TimeDerivativesEquations	Interface summing up the contribution of several forces into orbit and mass derivatives.
TimeInterpolator<T extends TimeStamped>	This interface represents objects that can interpolate a time stamped value with respect to time.
TimeScalarFunction	This interface represents a scalar function of time.
TimeScale	Interface for time scales.
TimeScales	A collection of TimeScales.
TimeScalesFactory	Factory for predefined time scales.
TimeShiftable<T extends TimeShiftable<T>>	This interface represents objects that can be shifted in time.
TimeSpanDragForce	Deprecated. as of 12.1
TimeSpanEstimatedModel	Time span estimated tropospheric model.
TimeSpanEstimatedTroposphericModel	Deprecated. as of 12.1, replaced by TimeSpanEstimatedModel
TimeSpanMap<T>	Container for objects that apply to spans of time.
TimeSpanMap.Span<S>	Holder for one time span.
TimeSpanMap.Transition<S>	Class holding transition times.
TimeSpanParametricAcceleration	Time span parametric acceleration model.
TimeStamped	This interface represents objects that have a AbsoluteDate date attached to them.
TimeStampedAngularCoordinates	time-stamped version of AngularCoordinates.
TimeStampedAngularCoordinatesHermiteInterpolator	Class using Hermite interpolator to interpolate time stamped angular coordinates.
TimeStampedCache<T extends TimeStamped>	Interface for a data structure that can provide concurrent access to TimeStamped data surrounding a given date.
TimeStampedCacheException	This class is the base class for all specific exceptions thrown by during the GenericTimeStampedCache.
TimeStampedDouble	Class that associates a double with a date.
TimeStampedDoubleAndDerivative	Class that associates a double, its time derivative with a date.
TimeStampedDoubleAndDerivativeHermiteInterpolator	Hermite interpolator of time stamped double value.
TimeStampedDoubleHermiteInterpolator	Hermite interpolator of time stamped double value.
TimeStampedField<KK extends CalculusFieldElement<KK>>	Class that associates a field with a date.
TimeStampedFieldAngularCoordinates<T extends CalculusFieldElement<T>>	time-stamped version of FieldAngularCoordinates.
TimeStampedFieldAngularCoordinatesHermiteInterpolator<KK extends CalculusFieldElement<KK>>	Class using Hermite interpolator to interpolate time stamped angular coordinates.
TimeStampedFieldHermiteInterpolator<KK extends CalculusFieldElement<KK>>	Hermite interpolator of time stamped field value.
TimeStampedFieldPVCoordinates<T extends CalculusFieldElement<T>>	time-stamped version of FieldPVCoordinates.
TimeStampedFieldPVCoordinatesHermiteInterpolator<KK extends CalculusFieldElement<KK>>	Class using a Hermite interpolator to interpolate time stamped position-velocity-acceleration coordinates.
TimeStampedGenerator<T extends TimeStamped>	Generator to use for creating entries in time stamped caches.
TimeStampedPair<K extends TimeStamped,V extends TimeStamped>	Pair of time stamped values being defined at the same date.
TimeStampedPVCoordinates	time-stamped version of PVCoordinates.
TimeStampedPVCoordinatesHermiteInterpolator	Class using a Hermite interpolator to interpolate time stamped position-velocity-acceleration coordinates.
TimeSystem	The set of time systems defined in CCSDS standards (ADM, ODM, NDM).
TimeSystem	Enumerate for the time systems used in navigation files.
TimeSystemCorrection	Container for time system corrections.
TimetagReference	Reference for time tag.
TimeVectorFunction	This interface represents a multi-valued function of time.
TLE	This class is a container for a single set of TLE data.
TLEConstants	Constants necessary to TLE propagation.
TleGenerationAlgorithm	This interface provides a way to generate a TLE from a spacecraft state.
TleGenerationUtil	Utility class for TLE generation algorithm.
TLEPropagator	This class provides elements to propagate TLE's.
TLEPropagatorBuilder	Builder for TLEPropagator.
TokenType	Enumerate for tokens occurring during CCSDS file parsing.
TopocentricFrame	Topocentric frame.
TorqueFree	This class handles torque-free motion of a general (non-symmetrical) body.
TrackingCoordinates	Container for azimut/elevation/range coordinates as seen from a ground point.
TrackingMode	Tracking mode.
TrajectoryState	Trajectory state entry.
TrajectoryStateHistory	Trajectory state history.
TrajectoryStateHistoryMetadata	Metadata for trajectory state history.
TrajectoryStateHistoryMetadataKey	Keys for rajectory state history container entries.
Transform	Transformation class in three dimensional space.
TransformGenerator	Generator to use transforms in GenericTimeStampedCache.
TransformProvider	Interface for Transform providers.
TransformProviderUtils	Utility for Transform providers.
TriggerDate	Generator for one column of a Jacobian matrix for special case of trigger dates.
TroposphereMappingFunction	Interface for mapping functions used in the tropospheric delay computation.
TroposphereMappingFunctionAdapter	Deprecated. temporary adapter to be removed when MappingFunction is removed
TroposphericDelay	Container for tropospheric delay.
TroposphericModel	Defines a tropospheric model, used to calculate the path delay imposed to electro-magnetic signals between an orbital satellite and a ground station.
TroposphericModelAdapter	Deprecated. temporary adapter to be removed when DiscreteTroposphericModel is removed
TroposphericModelUtils	Utility class for tropospheric models.
TruncatingFilter	Filter for truncating line-oriented files.
TTScale	Terrestrial Time as defined by IAU(1991) recommendation IV.
TurnAroundRange	Class modeling a turn-around range measurement using a primary ground station and a secondary ground station.
TurnAroundRangeBuilder	Builder for TurnAroundRange measurements.
TurnAroundRangeIonosphericDelayModifier	Class modifying theoretical TurnAroundRange measurement with ionospheric delay.
TurnAroundRangeTroposphericDelayModifier	Class modifying theoretical turn-around TurnAroundRange measurement with tropospheric delay.
TwoBodiesBaryFrame	Class creating the inertial barycenter frame from two bodies.
TwoDVariation	Interpolator for 2D phase center variation data.
Type	Enumerate for messages type.
TypeSvMessage	Container for data shared by several navigation messages.
Unit	Basic handling of multiplicative units.
Units	Units used in CCSDS messages.
Units	Units used in RTCM and IGS SSR messages.
UnitsCache	Cache for parsed units.
UnitsConverter	Converter between units.
UnivariateProcessNoise	Provider for a temporal evolution of the process noise matrix.
UnixCompressFilter	Filter for Unix compressed data.
UnnormalizedSphericalHarmonicsProvider	Interface used to provide un-normalized spherical harmonics coefficients.
UnnormalizedSphericalHarmonicsProvider.UnnormalizedSphericalHarmonics	Un-normalized spherical harmonics coefficients evaluated at a specific instant.
UnscentedKalmanEstimator	Implementation of an Unscented Kalman filter to perform orbit determination.
UnscentedKalmanEstimatorBuilder	Builder for an Unscented Kalman filter estimator.
UnscentedKalmanModel	Class defining the process model dynamics to use with a UnscentedKalmanEstimator.
UnsupportedParameterException	Exception for unsupported ParameterDriver in a model implementing ParameterDriversProvider.
UpdatableFrame	Frame whose transform from its parent can be updated.
UpperBounds	Utility class to compute upper bounds for truncation algorithms.
UserDefined	Container for user defined data.
UserDefinedWriter	Writer for user defined parameters data.
UserDefinedXmlTokenBuilder	Builder for user-defined parameters.
UserRangeAccuracy	User Range Accuracy.
UT1Scale	Universal Time 1.
UtcId	Enumerate for the UTC ids.
UTCScale	Coordinated Universal Time.
UTCTAIBulletinAFilesLoader	Loader for UTC-TAI extracted from bulletin A files.
UTCTAIHistoryFilesLoader	Loader for UTC versus TAI history files.
UTCTAIHistoryFilesLoader.Parser	Internal class performing the parsing.
UTCTAIOffset	Offset between UTC and TAI time scales.
UTCTAIOffsetsLoader	Interface for loading UTC-TAI offsets data files.
UTCTAIOffsetsLoader.Parser	Interface for parsing UTC-TAI offsets from a stream.
ValsecchiEncounterFrame	Valsecchi encounter local orbital frame based on Valsecchi formulation from : "Valsecchi, G.
VersionedITRF	Specific version of International Terrestrial Reference Frame.
ViennaACoefficients	Container for the ViennaOne and ViennaThree coefficients ah and aw.
ViennaAProvider	Provider for ViennaOne and ViennaThree coefficients ah and aw.
ViennaModelCoefficientsLoader	Loads Vienna tropospheric coefficients a given input stream.
ViennaModelType	Enumerate for Vienna tropospheric model 1 and 3.
ViennaOne	The Vienna 1 tropospheric delay model for radio techniques.
ViennaOneModel	Deprecated. as of 12.1, replaced by ViennaOne
ViennaThree	The Vienna 3 tropospheric delay model for radio techniques.
ViennaThreeModel	Deprecated. as of 12.1, replaced by ViennaThree
VisibilityTrigger	Enumerate for triggering visibility of spherical bodies.
WalkerConstellation	Builder for orbits of satellites forming a Walker constellation.
WalkerConstellationSlot<O extends Orbit>	Container for one satellite slot in a Walker constellation.
Wang1988	Conversion polynomial from "The Principle of the GPS Precise Positioning System", Wang et al, 1988.
WaterVaporPressureProvider	Interface for converting between relative humidity and water vapor pressure.
WaypointPVBuilder	Builder class, enabling incremental building of an PVCoordinatesProvider instance using waypoints defined on an ellipsoid.
WaypointPVBuilder.InterpolationFactory	Factory interface, creating the PVCoordinatesProvider instances between the provided waypoints.
WeatherModel	Deprecated. as of 12.1, replaced by PressureTemperatureHumidityProvider
WideLaneCombination	Wide-Lane combination.
WindUp	Modifier for wind-up effect in GNSS phase measurements.
WindUpFactory	Factory for wind-up modifiers.
WriterBuilder	Builder for all CCSDS Message files writers.
XmlGenerator	Generator for eXtended Markup Language CCSDS messages.
XmlLexicalAnalyzer	Lexical analyzer for XML CCSDS messages.
XmlStructureKey	Keys for FileFormat.XML format structure.
XmlStructureProcessingState	ProcessingState for structure of FileFormat.XML CCSDS Messages.
XmlSubStructureKey	Keywords for CDM data sub-structure in XML files.
XmlTokenBuilder	Builder for building ParseToken from XML elements.
XYZCovariance	Container for XYZ covariance matrix data.
XYZCovarianceKey	Keys for CDM covariance matrix entries.
YawCompensation	This class handles yaw compensation attitude provider.
YawSteering	This class handles yaw steering law.
YesNoUnknown	Yes, No, Unknown values for various elements.
YUMAParser	This class reads Yuma almanac files and provides GPS almanacs.
ZeisModel	Zeis model for J2-squared second-order terms.
ZipJarCrawler	Helper class for loading data files from a zip/jar archive.