Package org.orekit.forces.radiation

Class RadiationPressureModel

java.lang.Object

org.orekit.forces.radiation.RadiationPressureModel

All Implemented Interfaces:

ForceModel, RadiationForceModel, EventDetectorsProvider, ParameterDriversProvider

public class RadiationPressureModel
extends Object
implements RadiationForceModel

Class representing a light-induced radiation pressure force, by leveraging on a given flux model.

This class should not be used in addition to SolarRadiationPressure, which is another way of representing the same orbital perturbation.

Since:

12.1

Author:

Romain Serra

See Also:

LightFluxModel, RadiationSensitive

Field Summary

Fields inherited from interface org.orekit.propagation.events.EventDetectorsProvider

DATATION_ACCURACY

Constructor Summary

Constructors

Constructor	Description
RadiationPressureModel(LightFluxModel lightFluxModel, RadiationSensitive radiationSensitive)	Constructor.

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> FieldVector3D<T>	acceleration(FieldSpacecraftState<T> s, T[] parameters)	Compute acceleration.
Vector3D	acceleration(SpacecraftState s, double[] parameters)	Compute acceleration.
boolean	dependsOnPositionOnly()	Check if force model depends on position only at a given, fixed date.
Stream<EventDetector>	getEventDetectors()	Get the discrete events related to the model.
<T extends CalculusFieldElement<T>> Stream<FieldEventDetector<T>>	getFieldEventDetectors(Field<T> field)	Get the discrete events related to the model.
LightFluxModel	getLightFluxModel()	Getter for light flux model.
List<ParameterDriver>	getParametersDrivers()	Get the drivers for parameters.
RadiationSensitive	getRadiationSensitive()	Getter for radiation sensitive object.
<T extends CalculusFieldElement<T>> void	init(FieldSpacecraftState<T> initialState, FieldAbsoluteDate<T> target)	Initialize the force model at the start of propagation.
void	init(SpacecraftState initialState, AbsoluteDate target)	Initialize the force model at the start of propagation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.propagation.events.EventDetectorsProvider

getDateDetector, getEventDetectors, getFieldDateDetector, getFieldEventDetectors

Methods inherited from interface org.orekit.forces.ForceModel

addContribution, addContribution, dependsOnAttitudeRate

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported

Constructor Detail

RadiationPressureModel

public RadiationPressureModel(LightFluxModel lightFluxModel,
                              RadiationSensitive radiationSensitive)

Constructor.

Parameters:

lightFluxModel - model for light flux

radiationSensitive - object defining radiation properties

Method Detail

getRadiationSensitive

public RadiationSensitive getRadiationSensitive()

Getter for radiation sensitive object.

Returns:

radiation sensitive object

getLightFluxModel

public LightFluxModel getLightFluxModel()

Getter for light flux model.

Returns:

flux model

dependsOnPositionOnly

public boolean dependsOnPositionOnly()

Check if force model depends on position only at a given, fixed date.

Specified by:

dependsOnPositionOnly in interface ForceModel

Specified by:

dependsOnPositionOnly in interface RadiationForceModel

Returns:

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

init

public void init(SpacecraftState initialState,
                 AbsoluteDate target)

Initialize the force model at the start of propagation. This method will be called before any calls to ForceModel.addContribution(SpacecraftState, TimeDerivativesEquations), ForceModel.addContribution(FieldSpacecraftState, FieldTimeDerivativesEquations), ForceModel.acceleration(SpacecraftState, double[]) or ForceModel.acceleration(FieldSpacecraftState, CalculusFieldElement[])

The default implementation of this method does nothing.

Specified by:

init in interface ForceModel

Parameters:

initialState - spacecraft state at the start of propagation.

target - date of propagation. Not equal to initialState.getDate().

init

public <T extends CalculusFieldElement<T>> void init(FieldSpacecraftState<T> initialState,
                                                     FieldAbsoluteDate<T> target)

Initialize the force model at the start of propagation. This method will be called before any calls to ForceModel.addContribution(SpacecraftState, TimeDerivativesEquations), ForceModel.addContribution(FieldSpacecraftState, FieldTimeDerivativesEquations), ForceModel.acceleration(SpacecraftState, double[]) or ForceModel.acceleration(FieldSpacecraftState, CalculusFieldElement[])

The default implementation of this method does nothing.

Specified by:

init in interface ForceModel

Type Parameters:

T - type of the elements

Parameters:

initialState - spacecraft state at the start of propagation.

target - date of propagation. Not equal to initialState.getDate().

acceleration

public Vector3D acceleration(SpacecraftState s,
                             double[] parameters)

Compute acceleration.

Specified by:

acceleration in interface ForceModel

Parameters:

s - current state information: date, kinematics, attitude

parameters - values of the force model parameters at state date, only 1 value for each parameterDriver

Returns:

acceleration in same frame as state

acceleration

public <T extends CalculusFieldElement<T>> FieldVector3D<T> acceleration(FieldSpacecraftState<T> s,
                                                                         T[] parameters)

Compute acceleration.

Specified by:

acceleration in interface ForceModel

Type Parameters:

T - type of the elements

Parameters:

s - current state information: date, kinematics, attitude

parameters - values of the force model parameters at state date, only 1 value for each parameterDriver

Returns:

acceleration in same frame as state

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for parameters.

Specified by:

getParametersDrivers in interface ParameterDriversProvider

Returns:

drivers for parameters

getEventDetectors

public Stream<EventDetector> getEventDetectors()

Get the discrete events related to the model.

This method is not intended to be called several time, only once by a propagator, as it has the side effect of rebuilding the events detectors when called.

Specified by:

getEventDetectors in interface EventDetectorsProvider

Specified by:

getEventDetectors in interface ForceModel

Returns:

stream of event detectors

getFieldEventDetectors

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

Get the discrete events related to the model.

This method is not intended to be called several time, only once by a propagator, as it has the side effect of rebuilding the events detectors when called.

Specified by:

getFieldEventDetectors in interface EventDetectorsProvider

Specified by:

getFieldEventDetectors in interface ForceModel

Type Parameters:

T - extends CalculusFieldElement<T>

Parameters:

field - field to which the state belongs

Returns:

stream of event detectors