Package org.orekit.propagation.semianalytical.dsst.forces

Class ZeisModel

java.lang.Object

org.orekit.propagation.semianalytical.dsst.forces.ZeisModel

All Implemented Interfaces:

J2SquaredModel

public class ZeisModel
extends Object
implements J2SquaredModel

Zeis model for J2-squared second-order terms.

Since:

12.0

Author:

Bryan Cazabonne

See Also:

"ZEIS, Eric and CEFOLA, P. Computerized algebraic utilities for the construction of nonsingular satellite theories. Journal of Guidance and Control, 1980, vol. 3, no 1, p. 48-54.", "SAN-JUAN, Juan F., LÓPEZ, Rosario, et CEFOLA, Paul J. A Second-Order Closed-Form $$ J_2 $$ Model for the Draper Semi-Analytical Satellite Theory. The Journal of the Astronautical Sciences, 2022, p. 1-27."

Constructor Summary

Constructors

Constructor	Description
ZeisModel()	Constructor.

Method Summary

Modifier and Type	Method	Description
double	computeC2Z(DSSTJ2SquaredClosedFormContext context)	Get the value of the Zeis constant.
<T extends CalculusFieldElement<T>> T	computeC2Z(FieldDSSTJ2SquaredClosedFormContext<T> context)	Get the value of the Zeis constant.
double[]	computeMeanEquinoctialSecondOrderTerms(DSSTJ2SquaredClosedFormContext context)	Compute the J2-squared second-order terms in equinoctial elements.
<T extends CalculusFieldElement<T>> T[]	computeMeanEquinoctialSecondOrderTerms(FieldDSSTJ2SquaredClosedFormContext<T> context)	Compute the J2-squared second-order terms in equinoctial elements.

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.semianalytical.dsst.forces.J2SquaredModel

initializeShortPeriodTerms, initializeShortPeriodTerms, updateShortPeriodTerms, updateShortPeriodTerms

Constructor Detail

ZeisModel

public ZeisModel()

Constructor.

Method Detail

computeMeanEquinoctialSecondOrderTerms

public double[] computeMeanEquinoctialSecondOrderTerms(DSSTJ2SquaredClosedFormContext context)

Compute the J2-squared second-order terms in equinoctial elements..

Specified by:

computeMeanEquinoctialSecondOrderTerms in interface J2SquaredModel

Parameters:

context - model context

Returns:

the J2-squared second-order terms in equinoctial elements. Order must follow: [A, K, H, Q, P, M]

computeMeanEquinoctialSecondOrderTerms

public <T extends CalculusFieldElement<T>> T[] computeMeanEquinoctialSecondOrderTerms(FieldDSSTJ2SquaredClosedFormContext<T> context)

Compute the J2-squared second-order terms in equinoctial elements..

Specified by:

computeMeanEquinoctialSecondOrderTerms in interface J2SquaredModel

Type Parameters:

T - type of the elements

Parameters:

context - model context

Returns:

the J2-squared second-order terms in equinoctial elements. Order must follow: [A, K, H, Q, P, M]

computeC2Z

public double computeC2Z(DSSTJ2SquaredClosedFormContext context)

Get the value of the Zeis constant.

Parameters:

context - model context

Returns:

the value of the Zeis constant

computeC2Z

public <T extends CalculusFieldElement<T>> T computeC2Z(FieldDSSTJ2SquaredClosedFormContext<T> context)

Get the value of the Zeis constant.

Type Parameters:

T - type of the elements

Parameters:

context - model context

Returns:

the value of the Zeis constant