fr.cnes.sirius.patrius.stela.forces
Class AbstractStelaGaussContribution

java.lang.Object
  fr.cnes.sirius.patrius.stela.forces.AbstractStelaGaussContribution

All Implemented Interfaces:

StelaForceModel

Direct Known Subclasses:

NonInertialContribution, SRPSquaring, StelaAtmosphericDrag, StelaSRPSquaring

public abstract class AbstractStelaGaussContribution
extends Object
implements StelaForceModel

Abstract Class for the computation of Gauss Equations and its derivatives

Computation of Gauss Equations and its derivatives Gives "GAUSS" attributes

Since:

1.3

Version:

$Id: AbstractStelaGaussContribution.java 8370 2013-04-04 15:25:52Z DentalC $

Author:

Cedric Dental

Concurrency :

not thread-safe

Concurrency comment :

not thread-safe because two threads can simultaneously modify global attributes of the class

Field Summary

protected double[]

dPert Value of the perturbation derivative

Constructor Summary

AbstractStelaGaussContribution()
Constructor of the class

Method Summary

protected double[][][]	computeGaussDerivativeEquations(StelaEquinoctialOrbit orbit) Computation of the Gauss equation derivatives matrix in TNW frame.
protected double[][]	computeGaussEquations(StelaEquinoctialOrbit orbit) Compute the TNW Gauss Equation for GTO.
abstract double[]	computePerturbation(StelaEquinoctialOrbit orbit, OrbitNatureConverter converter) Compute the dE/dt force derivatives for a given spacecraft state.
double[]	getdPert()
String	getType()

Methods inherited from class java.lang.Object

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

Methods inherited from interface fr.cnes.sirius.patrius.stela.forces.StelaForceModel

computePartialDerivatives, computeShortPeriods

Field Detail

dPert

protected double[] dPert

Value of the perturbation derivative

Constructor Detail

AbstractStelaGaussContribution

public AbstractStelaGaussContribution()

Constructor of the class

Method Detail

getType

public String getType()

Specified by:

getType in interface StelaForceModel

Returns:

the type

getdPert

public double[] getdPert()

Returns:

the dPert

computePerturbation

public abstract double[] computePerturbation(StelaEquinoctialOrbit orbit,
                                             OrbitNatureConverter converter)
                                      throws OrekitException

Compute the dE/dt force derivatives for a given spacecraft state.

Parameters:

orbit - current orbit information: date, kinematics

converter - mean / osculating parameters converter

Returns:

the perturbation dE/dt for the current force

Throws:

OrekitException - if perturbation computation fails

computeGaussEquations

protected double[][] computeGaussEquations(StelaEquinoctialOrbit orbit)

Compute the TNW Gauss Equation for GTO.

Parameters:

orbit - current orbit information: date, kinematics

Returns:

gaussEquations

computeGaussDerivativeEquations

protected double[][][] computeGaussDerivativeEquations(StelaEquinoctialOrbit orbit)

Computation of the Gauss equation derivatives matrix in TNW frame.

Parameters:

orbit - current orbit information: date, kinematics

Returns:

gaussDerivativeEquations