fr.cnes.sirius.patrius.stela.forces.gravity

Class AbstractStelaZonalAttraction

java.lang.Object

fr.cnes.sirius.patrius.stela.forces.AbstractStelaLagrangeContribution

fr.cnes.sirius.patrius.stela.forces.gravity.AbstractStelaZonalAttraction

All Implemented Interfaces:

StelaForceModel, Serializable

Direct Known Subclasses:

StelaRecurrenceZonalAttraction, StelaZonalAttraction

public abstract class AbstractStelaZonalAttraction
extends AbstractStelaLagrangeContribution

This abstract class represents the zonal harmonics.

Since:

4.16

Author:

Thibaut BONIT HISTORY VERSION:4.16:OPENFD-391:25/04/2025:[STELA-PATRIUS] Implementation zonaux par recurrence END-HISTORY

See Also:

Serialized Form

Concurrency :

immutable

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	isJ2SquareComputed Indicate if J2 should be computed or not.
protected int	zonalDegreeMaxPerturbation Degree of development for zonal perturbations.

Fields inherited from class fr.cnes.sirius.patrius.stela.forces.AbstractStelaLagrangeContribution

dPot

Constructor Summary

Constructors

Constructor and Description
AbstractStelaZonalAttraction(int zonalDegreeMaxPerturbation, boolean isJ2SquareComputed) Constructor.

Method Summary

Modifier and Type	Method and Description
abstract double[]	computeJ2Square(StelaEquinoctialOrbit orbit) Compute the effect of the J2² of the Zonal Perturbation.
int	getZonalDegreeMaxPerturbation() Getter for the degree of development for zonal perturbations.
boolean	isJ2SquareComputed() Indicate if J2 should be computed or not.

Methods inherited from class fr.cnes.sirius.patrius.stela.forces.AbstractStelaLagrangeContribution

computePerturbation, getdPot, 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

zonalDegreeMaxPerturbation

protected final int zonalDegreeMaxPerturbation

Degree of development for zonal perturbations.

isJ2SquareComputed

protected final boolean isJ2SquareComputed

Indicate if J2 should be computed or not.

Constructor Detail

AbstractStelaZonalAttraction

public AbstractStelaZonalAttraction(int zonalDegreeMaxPerturbation,
                                    boolean isJ2SquareComputed)

Constructor.

Parameters:

zonalDegreeMaxPerturbation - degree of development for zonal perturbations

isJ2SquareComputed - true if J2² is computed, false otherwise

Throws:

NotPositiveException - if zonalDegreeMaxPerturbation < 0

Method Detail

getZonalDegreeMaxPerturbation

public int getZonalDegreeMaxPerturbation()

Getter for the degree of development for zonal perturbations.

Returns:

the degree of development for zonal perturbations

isJ2SquareComputed

public boolean isJ2SquareComputed()

Indicate if J2 should be computed or not.

Returns:

true if J2² is computed, false otherwise

computeJ2Square

public abstract double[] computeJ2Square(StelaEquinoctialOrbit orbit)
                                  throws PatriusException

Compute the effect of the J2² of the Zonal Perturbation.

Parameters:

orbit - an orbit

Returns:

the J2² perturbation

Throws:

PatriusException - if the provider doesn't support 2nd degree