org.orekit.forces.radiation

Class AbstractRadiationForceModel

java.lang.Object

org.orekit.forces.AbstractForceModel

org.orekit.forces.radiation.AbstractRadiationForceModel

All Implemented Interfaces:

ForceModel

Direct Known Subclasses:

ECOM2, SolarRadiationPressure

public abstract class AbstractRadiationForceModel
extends AbstractForceModel

Base class for radiation force models.

Since:

10.2

See Also:

SolarRadiationPressure, ECOM2

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractRadiationForceModel(ExtendedPVCoordinatesProvider sun, double equatorialRadius) Default constructor.

Method Summary

Modifier and Type	Method and Description
void	addOccultingBody(ExtendedPVCoordinatesProvider provider, double radius) Add a new occulting body.
boolean	dependsOnPositionOnly() Check if force models depends on position only.
protected <T extends CalculusFieldElement<T>> T[]	getEclipseAngles(FieldVector3D<T> sunPosition, FieldVector3D<T> position) Get the useful angles for eclipse computation.
protected double[]	getEclipseAngles(Vector3D sunPosition, Vector3D position) Get the useful angles for eclipse computation.
double	getEquatorialRadius() Getter for equatorial radius.
Stream<EventDetector>	getEventsDetectors() Get the discrete events related to the model.
<T extends CalculusFieldElement<T>> Stream<FieldEventDetector<T>>	getFieldEventsDetectors(Field<T> field) Get the discrete events related to the model.
protected <T extends CalculusFieldElement<T>> T[]	getGeneralEclipseAngles(FieldVector3D<T> position, FieldVector3D<T> occultingPosition, T occultingRadius, FieldVector3D<T> occultedPosition, T occultedRadius) Get the useful angles for eclipse computation.
protected double[]	getGeneralEclipseAngles(Vector3D position, Vector3D occultingPosition, double occultingRadius, Vector3D occultedPosition, double occultedRadius) Get the useful angles for eclipse computation.
Map<ExtendedPVCoordinatesProvider,Double>	getOtherOccultingBodies() Getter for other occulting bodies to consider.

Methods inherited from class org.orekit.forces.AbstractForceModel

complainIfNotSupported, getParameterDriver, isSupported

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.orekit.forces.ForceModel

acceleration, acceleration, addContribution, addContribution, getParameters, getParameters, getParametersDrivers, init, init

Constructor Detail

AbstractRadiationForceModel

protected AbstractRadiationForceModel(ExtendedPVCoordinatesProvider sun,
                                      double equatorialRadius)

Default constructor. Only central body is considered.

Parameters:

sun - Sun model

equatorialRadius - central body spherical shape model (for umbra/penumbra computation)

Method Detail

dependsOnPositionOnly

public boolean dependsOnPositionOnly()

Check if force models depends on position only.

Returns:

true if force model depends on position only, false if it depends on velocity, either directly or due to a dependency on attitude

getEventsDetectors

public Stream<EventDetector> getEventsDetectors()

Get the discrete events related to the model.

Returns:

stream of events detectors

getFieldEventsDetectors

public <T extends CalculusFieldElement<T>> Stream<FieldEventDetector<T>> getFieldEventsDetectors(Field<T> field)

Get the discrete events related to the model.

Type Parameters:

T - extends CalculusFieldElement<T>

Parameters:

field - field to which the state belongs

Returns:

stream of events detectors

getEclipseAngles

protected double[] getEclipseAngles(Vector3D sunPosition,
                                    Vector3D position)

Get the useful angles for eclipse computation.

Parameters:

sunPosition - Sun position in the selected frame

position - the satellite's position in the selected frame

Returns:

the 3 angles {(satCentral, satSun), Central body apparent radius, Sun apparent radius}

getGeneralEclipseAngles

protected double[] getGeneralEclipseAngles(Vector3D position,
                                           Vector3D occultingPosition,
                                           double occultingRadius,
                                           Vector3D occultedPosition,
                                           double occultedRadius)

Get the useful angles for eclipse computation.

Parameters:

position - the satellite's position in the selected frame

occultingPosition - Oculting body position in the selected frame

occultingRadius - Occulting body mean radius

occultedPosition - Occulted body position in the selected frame

occultedRadius - Occulted body mean radius

Returns:

the 3 angles {(satOcculting, satOcculted), Occulting body apparent radius, Occulted body apparent radius}

getEclipseAngles

protected <T extends CalculusFieldElement<T>> T[] getEclipseAngles(FieldVector3D<T> sunPosition,
                                                                   FieldVector3D<T> position)

Get the useful angles for eclipse computation.

Type Parameters:

T - extends CalculusFieldElement

Parameters:

sunPosition - Sun position in the selected frame

position - the satellite's position in the selected frame.

Returns:

the 3 angles {(satCentral, satSun), Central body apparent radius, Sun apparent radius}

getGeneralEclipseAngles

protected <T extends CalculusFieldElement<T>> T[] getGeneralEclipseAngles(FieldVector3D<T> position,
                                                                          FieldVector3D<T> occultingPosition,
                                                                          T occultingRadius,
                                                                          FieldVector3D<T> occultedPosition,
                                                                          T occultedRadius)

Get the useful angles for eclipse computation.

Type Parameters:

T - extends RealFieldElement

Parameters:

occultingPosition - Oculting body position in the selected frame

occultingRadius - Occulting body mean radius

occultedPosition - Occulted body position in the selected frame

occultedRadius - Occulted body mean radius

position - the satellite's position in the selected frame

Returns:

the 3 angles {(satOcculting, satOcculted), Occulting body apparent radius, Occulted body apparent radius}

addOccultingBody

public void addOccultingBody(ExtendedPVCoordinatesProvider provider,
                             double radius)

Add a new occulting body. Central body is already considered, it shall not be added this way.

Parameters:

provider - body PV provider

radius - body mean radius

getOtherOccultingBodies

public Map<ExtendedPVCoordinatesProvider,Double> getOtherOccultingBodies()

Getter for other occulting bodies to consider.

Returns:

the map of other occulting bodies and corresponding mean radiuses

getEquatorialRadius

public double getEquatorialRadius()

Getter for equatorial radius.

Returns:

central body equatorial radius