Package org.orekit.forces.radiation

Class IsotropicRadiationClassicalConvention

java.lang.Object

org.orekit.forces.radiation.IsotropicRadiationClassicalConvention

All Implemented Interfaces:

RadiationSensitive

public class IsotropicRadiationClassicalConvention
extends Object
implements RadiationSensitive

This class represents the features of a simplified spacecraft.

This model uses the classical thermo-optical coefficients Ca for absorption, Cs for specular reflection and Cd for diffuse reflection. The equation Ca + Cs + Cd = 1 always holds.

A less standard set of coefficients α = Ca for absorption and τ = Cs/(1-Ca) for specular reflection is implemented in the sister class IsotropicRadiationCNES95Convention.

Since:

7.1

Author:

Luc Maisonobe

See Also:

BoxAndSolarArraySpacecraft, IsotropicDrag, IsotropicRadiationCNES95Convention

Field Summary

Fields inherited from interface org.orekit.forces.radiation.RadiationSensitive

ABSORPTION_COEFFICIENT, GLOBAL_RADIATION_FACTOR, REFLECTION_COEFFICIENT

Constructor Summary

Constructors

Constructor	Description
IsotropicRadiationClassicalConvention(double crossSection, double ca, double cs)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
List<ParameterDriver>	getRadiationParametersDrivers()	Get the drivers for supported parameters.
<T extends CalculusFieldElement<T>> FieldVector3D<T>	radiationPressureAcceleration(FieldSpacecraftState<T> state, FieldVector3D<T> flux, T[] parameters)	Compute the acceleration due to radiation pressure.
Vector3D	radiationPressureAcceleration(SpacecraftState state, Vector3D flux, double[] parameters)	Compute the acceleration due to radiation pressure.

Methods inherited from class java.lang.Object

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

Constructor Detail

IsotropicRadiationClassicalConvention

public IsotropicRadiationClassicalConvention(double crossSection,
                                             double ca,
                                             double cs)

Simple constructor.

Parameters:

crossSection - Surface (m²)

ca - absorption coefficient Ca between 0.0 an 1.0

cs - specular reflection coefficient Cs between 0.0 an 1.0

Method Detail

getRadiationParametersDrivers

public List<ParameterDriver> getRadiationParametersDrivers()

Get the drivers for supported parameters.

Specified by:

getRadiationParametersDrivers in interface RadiationSensitive

Returns:

parameters drivers

radiationPressureAcceleration

public Vector3D radiationPressureAcceleration(SpacecraftState state,
                                              Vector3D flux,
                                              double[] parameters)

Compute the acceleration due to radiation pressure.

Specified by:

radiationPressureAcceleration in interface RadiationSensitive

Parameters:

state - current state

flux - radiation flux in the same inertial frame as spacecraft orbit

parameters - values of the force model parameters

Returns:

spacecraft acceleration in the same inertial frame as spacecraft orbit (m/s²)

radiationPressureAcceleration

public <T extends CalculusFieldElement<T>> FieldVector3D<T> radiationPressureAcceleration(FieldSpacecraftState<T> state,
                                                                                          FieldVector3D<T> flux,
                                                                                          T[] parameters)

Compute the acceleration due to radiation pressure.

Specified by:

radiationPressureAcceleration in interface RadiationSensitive

Type Parameters:

T - extends CalculusFieldElement

Parameters:

state - current state

flux - radiation flux in the same inertial frame as spacecraft orbit

parameters - values of the force model parameters

Returns:

spacecraft acceleration in the same inertial frame as spacecraft orbit (m/s²)