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 and Description
ZeisModel() Constructor.

Method Summary

Modifier and Type	Method and Description
double	computeC2Z(DSSTJ2SquaredClosedFormContext context) Get the value of the Zeis constant.
<T extends org.hipparchus.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 org.hipparchus.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

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 org.hipparchus.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 org.hipparchus.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