Class FieldSGP4<T extends CalculusFieldElement<T>>
- java.lang.Object
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- org.orekit.propagation.FieldAbstractPropagator<T>
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- org.orekit.propagation.analytical.FieldAbstractAnalyticalPropagator<T>
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- org.orekit.propagation.analytical.tle.FieldTLEPropagator<T>
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- org.orekit.propagation.analytical.tle.FieldSGP4<T>
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- Type Parameters:
T
- type of the field elements
- All Implemented Interfaces:
FieldPropagator<T>
,FieldPVCoordinatesProvider<T>
,ParameterDriversProvider
public class FieldSGP4<T extends CalculusFieldElement<T>> extends FieldTLEPropagator<T>
This class contains methods to compute propagated coordinates with the SGP4 model.The user should not bother in this class since it is handled internaly by the
TLEPropagator
.This implementation is largely inspired from the paper and source code Revisiting Spacetrack Report #3 and is fully compliant with its results and tests cases.
- Since:
- 11.0
- Author:
- Felix R. Hoots, Ronald L. Roehrich, December 1980 (original fortran), David A. Vallado, Paul Crawford, Richard Hujsak, T.S. Kelso (C++ translation and improvements), Fabien Maussion (java translation), Thomas Paulet (field translation)
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Field Summary
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Fields inherited from class org.orekit.propagation.analytical.tle.FieldTLEPropagator
a, a0dp, beta0, beta02, c1, c2, c4, coef, coef1, cosi0, e, e0sq, eeta, eta, etasq, i, omega, omgdot, perige, s4, sini0, t2cof, theta2, tle, tsi, utc, xl, xmdot, xn0dp, xnodcf, xnode, xnodot
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Fields inherited from interface org.orekit.propagation.FieldPropagator
DEFAULT_MASS
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Constructor Summary
Constructors Constructor Description FieldSGP4(FieldTLE<T> initialTLE, AttitudeProvider attitudeProvider, T mass, Frame teme, T[] parameters)
Constructor for a unique initial TLE.FieldSGP4(FieldTLE<T> initialTLE, AttitudeProvider attitudeProvider, T mass, T[] parameters)
Constructor for a unique initial TLE.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
sxpInitialize(T[] parameters)
Initialization proper to each propagator (SGP or SDP).protected void
sxpPropagate(T tSince, T[] parameters)
Propagation proper to each propagator (SGP or SDP).-
Methods inherited from class org.orekit.propagation.analytical.tle.FieldTLEPropagator
getFrame, getMass, getMU, getParametersDrivers, getPVCoordinates, getTLE, propagateOrbit, resetInitialState, resetIntermediateState, selectExtrapolator, selectExtrapolator, selectExtrapolator, selectExtrapolator
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Methods inherited from class org.orekit.propagation.analytical.FieldAbstractAnalyticalPropagator
acceptStep, addEventDetector, basicPropagate, clearEventsDetectors, getEphemerisGenerator, getEventsDetectors, getPvProvider, propagate
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Methods inherited from class org.orekit.propagation.FieldAbstractPropagator
addAdditionalStateProvider, getAdditionalStateProviders, getAttitudeProvider, getField, getInitialState, getManagedAdditionalStates, getMultiplexer, getStartDate, initializeAdditionalStates, initializePropagation, isAdditionalStateManaged, propagate, setAttitudeProvider, setStartDate, stateChanged, updateAdditionalStates, updateUnmanagedStates
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.orekit.propagation.FieldPropagator
clearStepHandlers, getPosition, getPVCoordinates, setStepHandler, setStepHandler
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Methods inherited from interface org.orekit.utils.ParameterDriversProvider
getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported
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Constructor Detail
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FieldSGP4
@DefaultDataContext public FieldSGP4(FieldTLE<T> initialTLE, AttitudeProvider attitudeProvider, T mass, T[] parameters)
Constructor for a unique initial TLE.This constructor uses the
default data context
.- Parameters:
initialTLE
- the TLE to propagate.attitudeProvider
- provider for attitude computationmass
- spacecraft mass (kg)parameters
- SGP4 and SDP4 model parameters- See Also:
FieldSGP4(FieldTLE, AttitudeProvider, CalculusFieldElement, Frame, CalculusFieldElement[])
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FieldSGP4
public FieldSGP4(FieldTLE<T> initialTLE, AttitudeProvider attitudeProvider, T mass, Frame teme, T[] parameters)
Constructor for a unique initial TLE.- Parameters:
initialTLE
- the TLE to propagate.attitudeProvider
- provider for attitude computationmass
- spacecraft mass (kg)teme
- the TEME frame to use for propagation.parameters
- SGP4 and SDP4 model parameters
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Method Detail
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sxpInitialize
protected void sxpInitialize(T[] parameters)
Initialization proper to each propagator (SGP or SDP).- Specified by:
sxpInitialize
in classFieldTLEPropagator<T extends CalculusFieldElement<T>>
- Parameters:
parameters
- model parameters
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sxpPropagate
protected void sxpPropagate(T tSince, T[] parameters)
Propagation proper to each propagator (SGP or SDP).- Specified by:
sxpPropagate
in classFieldTLEPropagator<T extends CalculusFieldElement<T>>
- Parameters:
tSince
- the offset from initial epoch (min)parameters
- model parameters
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