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

Class StelaZonalAttraction

java.lang.Object

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

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

All Implemented Interfaces:

StelaForceModel, Serializable

public class StelaZonalAttraction
extends AbstractStelaLagrangeContribution

Class computing Zonal perturbations

computes Zonal perturbations, short periods and partial derivatives depending on the degree of development asked

The class is adapted from STELA EarthPotentialGTO in fr.cnes.los.stela.elib.business.implementation.earthPotential

Since:

1.3

Version:

$Id$

Author:

Cedric Dental

See Also:

Serialized Form

Concurrency :

conditionally thread-safe

Concurrency comment :

thread safe if the PotentialCoefficientsProvider used is thread safe

Field Summary

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

dPot

Constructor Summary

Constructors

Constructor and Description
StelaZonalAttraction(PotentialCoefficientsProvider provider, int inZonalDegreeMaxPerturbation, boolean inIsJ2SquareComputed, int inZonalDegreeMaxSP, int inZonalDegreeMaxPD, boolean inIsJ2SquareParDerComputed) Constructor.

Method Summary

Modifier and Type	Method and Description
double[]	computeJ10(StelaEquinoctialOrbit orbit) Compute the effect of the 10th degree development of the Zonal Perturbation
double[]	computeJ11(StelaEquinoctialOrbit orbit) Compute the effect of the 11th degree development of the Zonal Perturbation
double[]	computeJ12(StelaEquinoctialOrbit orbit) Compute the effect of the 12th degree development of the Zonal Perturbation
double[]	computeJ13(StelaEquinoctialOrbit orbit) Compute the effect of the 13th degree development of the Zonal Perturbation
double[]	computeJ14(StelaEquinoctialOrbit orbit) Compute the effect of the 14th degree development of the Zonal Perturbation
double[]	computeJ15(StelaEquinoctialOrbit orbit) Compute the effect of the 15th degree development of the Zonal Perturbation
double[]	computeJ2(StelaEquinoctialOrbit orbit) Compute the effect of the 2nd degree development of the Zonal Perturbation
double[]	computeJ2(StelaEquinoctialOrbit orbit, double mu) Compute the effect of the 2nd degree development of the Zonal Perturbation with specific mu.
double[][]	computeJ2PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J2 Potential effect
double[]	computeJ2ShortPeriods(StelaEquinoctialOrbit orbit) Compute the short periods linked to J2 Potential effect
double[]	computeJ2Square(StelaEquinoctialOrbit orbit) Compute the effect of the J2² of the Zonal Perturbation.
double[][]	computeJ2SquarePartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J2² Potential effect
double[]	computeJ3(StelaEquinoctialOrbit orbit) Compute the effect of the 3rd degree development of the Zonal Perturbation
double[]	computeJ3(StelaEquinoctialOrbit orbit, double mu) Compute the effect of the 3rd degree development of the Zonal Perturbation with specific mu
double[][]	computeJ3PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J3 Potential effect
double[]	computeJ4(StelaEquinoctialOrbit orbit) Compute the effect of the 4th degree development of the Zonal Perturbation
double[][]	computeJ4PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J4 Potential effect
double[]	computeJ5(StelaEquinoctialOrbit orbit) Compute the effect of the 5th degree development of the Zonal Perturbation
double[][]	computeJ5PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J5 Potential effect
double[]	computeJ6(StelaEquinoctialOrbit orbit) Compute the effect of the 6th degree development of the Zonal Perturbation
double[][]	computeJ6PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J6 Potential effect
double[]	computeJ7(StelaEquinoctialOrbit orbit) Compute the effect of the 7th degree development of the Zonal Perturbation
double[][]	computeJ7PartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives due to J7 Potential effect
double[]	computeJ8(StelaEquinoctialOrbit orbit) Compute the effect of the 8th degree development of the Zonal Perturbation
double[]	computeJ9(StelaEquinoctialOrbit orbit) Compute the effect of the 9th degree development of the Zonal Perturbation
double[][]	computePartialDerivatives(StelaEquinoctialOrbit orbit) Compute the partial derivatives for a given spacecraft state.
double[]	computePerturbation(StelaEquinoctialOrbit orbit) Compute the dE/dt force derivatives for a given spacecraft state.
double[]	computeShortPeriods(StelaEquinoctialOrbit orbit, OrbitNatureConverter converter) Compute the short periodic variations for a given spacecraft state.
boolean	isJ2SquareComputed() Getter for the J22 computation flag.
boolean	isJ2SquareParDerComputed() Getter for the J22 partial derivatives computation flag.

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

getdPot, getType

Methods inherited from class java.lang.Object

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

Constructor Detail

StelaZonalAttraction

public StelaZonalAttraction(PotentialCoefficientsProvider provider,
                            int inZonalDegreeMaxPerturbation,
                            boolean inIsJ2SquareComputed,
                            int inZonalDegreeMaxSP,
                            int inZonalDegreeMaxPD,
                            boolean inIsJ2SquareParDerComputed)
                     throws PatriusException

Constructor.

Parameters:

provider - gravity field coefficients provider

inZonalDegreeMaxPerturbation - degree of development for zonal perturbations (max 15)

inIsJ2SquareComputed - true J2² is computed

inZonalDegreeMaxSP - the degree of development for zonal short periods (max 2)

inZonalDegreeMaxPD - the degree of development for zonal partial derivatives (max 7)

inIsJ2SquareParDerComputed - true partial derivatives from J2 are computed

Throws:

PatriusException - Orekit exception needed for using the provider

Method Detail

computePerturbation

public double[] computePerturbation(StelaEquinoctialOrbit orbit)

Description copied from class: AbstractStelaLagrangeContribution

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

Specified by:

computePerturbation in class AbstractStelaLagrangeContribution

Parameters:

orbit - current orbit information: date, kinematics

Returns:

the perturbation dE/dt for the current force

computeShortPeriods

public double[] computeShortPeriods(StelaEquinoctialOrbit orbit,
                                    OrbitNatureConverter converter)

Description copied from interface: StelaForceModel

Compute the short periodic variations for a given spacecraft state.

Parameters:

orbit - current orbit information: date, kinematics

converter - converter necessary in some specific case (drag short periods computation)

Returns:

the short periodic variations of the current force

computePartialDerivatives

public double[][] computePartialDerivatives(StelaEquinoctialOrbit orbit)

Description copied from interface: StelaForceModel

Compute the partial derivatives for a given spacecraft state.

Parameters:

orbit - current orbit information: date, kinematics

Returns:

the partial derivatives of the current force

computeJ2

public double[] computeJ2(StelaEquinoctialOrbit orbit)

Compute the effect of the 2nd degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J2 perturbation

computeJ2

public double[] computeJ2(StelaEquinoctialOrbit orbit,
                          double mu)

Compute the effect of the 2nd degree development of the Zonal Perturbation with specific mu.

Parameters:

orbit - an orbit

mu - mu

Returns:

the J2 perturbation

computeJ3

public double[] computeJ3(StelaEquinoctialOrbit orbit)

Compute the effect of the 3rd degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J3 perturbation

computeJ3

public double[] computeJ3(StelaEquinoctialOrbit orbit,
                          double mu)

Compute the effect of the 3rd degree development of the Zonal Perturbation with specific mu

Parameters:

orbit - an orbit

mu - mu

Returns:

the J3 perturbation

computeJ4

public double[] computeJ4(StelaEquinoctialOrbit orbit)

Compute the effect of the 4th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J4 perturbation

computeJ5

public double[] computeJ5(StelaEquinoctialOrbit orbit)

Compute the effect of the 5th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J5 perturbation

computeJ6

public double[] computeJ6(StelaEquinoctialOrbit orbit)

Compute the effect of the 6th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J6 perturbation

computeJ7

public double[] computeJ7(StelaEquinoctialOrbit orbit)

Compute the effect of the 7th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J7 perturbation

computeJ8

public double[] computeJ8(StelaEquinoctialOrbit orbit)

Compute the effect of the 8th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J8 perturbation

computeJ9

public double[] computeJ9(StelaEquinoctialOrbit orbit)

Compute the effect of the 9th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J9 perturbation

computeJ10

public double[] computeJ10(StelaEquinoctialOrbit orbit)

Compute the effect of the 10th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J10 perturbation

computeJ11

public double[] computeJ11(StelaEquinoctialOrbit orbit)

Compute the effect of the 11th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J11 perturbation

computeJ12

public double[] computeJ12(StelaEquinoctialOrbit orbit)

Compute the effect of the 12th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J12 perturbation

computeJ13

public double[] computeJ13(StelaEquinoctialOrbit orbit)

Compute the effect of the 13th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J13 perturbation

computeJ14

public double[] computeJ14(StelaEquinoctialOrbit orbit)

Compute the effect of the 14th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J14 perturbation

computeJ15

public double[] computeJ15(StelaEquinoctialOrbit orbit)

Compute the effect of the 15th degree development of the Zonal Perturbation

Parameters:

orbit - an orbit

Returns:

the J15 perturbation

computeJ2Square

public double[] computeJ2Square(StelaEquinoctialOrbit orbit)

Compute the effect of the J2² of the Zonal Perturbation.

Parameters:

orbit - an orbit

Returns:

the J2² perturbation

computeJ2ShortPeriods

public double[] computeJ2ShortPeriods(StelaEquinoctialOrbit orbit)

Compute the short periods linked to J2 Potential effect

Compute the effect of the short periods generated by the 2nd degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

shortPeriodsJ2 the J2 short periods

computeJ2PartialDerivatives

public double[][] computeJ2PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J2 Potential effect

Compute the effect of the partial derivatives due to the 2nd degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ2 the J2 partial derivatives

computeJ3PartialDerivatives

public double[][] computeJ3PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J3 Potential effect

Compute the effect of the partial derivatives due to the 3rd degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ3 the J3 partial derivatives

computeJ4PartialDerivatives

public double[][] computeJ4PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J4 Potential effect

Compute the effect of the partial derivatives due to the 4th degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ4 the J4 partial derivatives

computeJ5PartialDerivatives

public double[][] computeJ5PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J5 Potential effect

Compute the effect of the partial derivatives due to the 5th degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ5 the J5 partial derivatives

computeJ6PartialDerivatives

public double[][] computeJ6PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J6 Potential effect

Compute the effect of the partial derivatives due to the 6th degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ6 the J6 partial derivatives

computeJ7PartialDerivatives

public double[][] computeJ7PartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J7 Potential effect

Compute the effect of the partial derivatives due to the 7th degree development of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ7 the J7 partial derivatives

computeJ2SquarePartialDerivatives

public double[][] computeJ2SquarePartialDerivatives(StelaEquinoctialOrbit orbit)

Compute the partial derivatives due to J2² Potential effect

Compute the effect of the partial derivatives due to J2² of the Zonal Perturbation

Parameters:

orbit - the equinoctial orbit

Returns:

partialDerivativesJ2Square the J2 partial derivatives

isJ2SquareComputed

public boolean isJ2SquareComputed()

Getter for the J2² computation flag.

Returns:

true if J2² is computed

isJ2SquareParDerComputed

public boolean isJ2SquareParDerComputed()

Getter for the J2² partial derivatives computation flag.

Returns:

true if J2² partial derivatives are computed