Interface J2SquaredModel
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- All Known Implementing Classes:
ZeisModel
public interface J2SquaredModel
Semi-analytical J2-squared model.This interface is implemented by models providing J2-squared second-order terms in equinoctial elements. These terms are used in the computation of the closed-form J2-squared perturbation in semi-analytical satellite theory.
- Since:
- 12.0
- Author:
- Bryan Cazabonne
- See Also:
ZeisModel
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description 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.default List<ShortPeriodTerms>
initializeShortPeriodTerms(AuxiliaryElements auxiliaryElements, PropagationType type, double[] parameters)
Performs initialization of J2-squared short period terms prior to propagation.default <T extends CalculusFieldElement<T>>
List<FieldShortPeriodTerms<T>>initializeShortPeriodTerms(FieldAuxiliaryElements<T> auxiliaryElements, PropagationType type, T[] parameters)
Performs initialization of J2-squared short period terms prior to propagation.default void
updateShortPeriodTerms(double[] parameters, SpacecraftState... meanStates)
Update the J2-squared short period terms.default <T extends CalculusFieldElement<T>>
voidupdateShortPeriodTerms(T[] parameters, FieldSpacecraftState<T>... meanStates)
Update the J2-squared short period terms.
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Method Detail
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computeMeanEquinoctialSecondOrderTerms
double[] computeMeanEquinoctialSecondOrderTerms(DSSTJ2SquaredClosedFormContext context)
Compute the J2-squared second-order terms in equinoctial elements.- Parameters:
context
- model context- Returns:
- the J2-squared second-order terms in equinoctial elements. Order must follow: [A, K, H, Q, P, M]
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computeMeanEquinoctialSecondOrderTerms
<T extends CalculusFieldElement<T>> T[] computeMeanEquinoctialSecondOrderTerms(FieldDSSTJ2SquaredClosedFormContext<T> context)
Compute the J2-squared second-order terms in equinoctial elements.- 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]
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initializeShortPeriodTerms
default List<ShortPeriodTerms> initializeShortPeriodTerms(AuxiliaryElements auxiliaryElements, PropagationType type, double[] parameters)
Performs initialization of J2-squared short period terms prior to propagation.- Parameters:
auxiliaryElements
- auxiliary elementstype
- type of the elements used (MEAN or OSCULATING)parameters
- force model parameters- Returns:
- a list containing the initialized short period terms
- Since:
- 12.2
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initializeShortPeriodTerms
default <T extends CalculusFieldElement<T>> List<FieldShortPeriodTerms<T>> initializeShortPeriodTerms(FieldAuxiliaryElements<T> auxiliaryElements, PropagationType type, T[] parameters)
Performs initialization of J2-squared short period terms prior to propagation.- Type Parameters:
T
- type of the field elements- Parameters:
auxiliaryElements
- auxiliary elementstype
- type of the orbital elements used (MEAN or OSCULATING)parameters
- force model parameters- Returns:
- a list containing the initialized short period terms
- Since:
- 12.2
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updateShortPeriodTerms
default void updateShortPeriodTerms(double[] parameters, SpacecraftState... meanStates)
Update the J2-squared short period terms.The
short period terms
that will be updated are the ones that were returned during the call toinitializeShortPeriodTerms(AuxiliaryElements, PropagationType, double[])
.- Parameters:
parameters
- force model parametersmeanStates
- mean states information: date, kinematics, attitude- Since:
- 12.2
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updateShortPeriodTerms
default <T extends CalculusFieldElement<T>> void updateShortPeriodTerms(T[] parameters, FieldSpacecraftState<T>... meanStates)
Update the J2-squared short period terms.The
short period terms
that will be updated are the ones that were returned during the call toinitializeShortPeriodTerms(AuxiliaryElements, PropagationType, double[])
.- Type Parameters:
T
- type of the field elements- Parameters:
parameters
- force model parametersmeanStates
- mean states information: date, kinematics, attitude- Since:
- 12.2
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