Package org.orekit.control.indirect.adjoint

Class AbstractCartesianAdjointEquationTerm

java.lang.Object

org.orekit.control.indirect.adjoint.AbstractCartesianAdjointEquationTerm

All Implemented Interfaces:

CartesianAdjointEquationTerm

Direct Known Subclasses:

AbstractCartesianAdjointGravitationalTerm, CartesianAdjointInertialTerm

public abstract class AbstractCartesianAdjointEquationTerm
extends Object
implements CartesianAdjointEquationTerm

Abstract class to define terms in the adjoint equations and Hamiltonian for Cartesian coordinates.

Since:

12.2

Author:

Romain Serra

See Also:

• CartesianAdjointDerivativesProvider
• FieldCartesianAdjointDerivativesProvider

Constructor Summary

Constructors

Constructor	Description
AbstractCartesianAdjointEquationTerm()

Method Summary

Modifier and Type	Method	Description
protected static <T extends CalculusFieldElement<T>> FieldGradient<T>[]	buildFieldGradientCartesianVector(T[] stateVariables)	Build a Cartesian vector whose components are independent variables for automatic differentiation at order 1.
protected static Gradient[]	buildGradientCartesianVector(double[] stateVariables)	Build a Cartesian vector whose components are independent variables for automatic differentiation at order 1.
protected abstract Vector3D	getAcceleration(AbsoluteDate date, double[] stateVariables, Frame frame)	Compute the acceleration vector.
protected abstract <T extends CalculusFieldElement<T>> FieldVector3D<T>	getFieldAcceleration(FieldAbsoluteDate<T> date, T[] stateVariables, Frame frame)	Compute the acceleration vector.
<T extends CalculusFieldElement<T>> T	getFieldHamiltonianContribution(FieldAbsoluteDate<T> date, T[] stateVariables, T[] adjointVariables, Frame frame)	Computes the contribution to the Hamiltonian.
<T extends CalculusFieldElement<T>> T[]	getFieldRatesContribution(FieldAbsoluteDate<T> date, T[] stateVariables, T[] adjointVariables, Frame frame)	Computes the contribution to the rates of the adjoint variables.
double	getHamiltonianContribution(AbsoluteDate date, double[] stateVariables, double[] adjointVariables, Frame frame)	Computes the contribution to the Hamiltonian.
double[]	getRatesContribution(AbsoluteDate date, double[] stateVariables, double[] adjointVariables, Frame frame)	Computes the contribution to the rates of the adjoint variables.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractCartesianAdjointEquationTerm

public AbstractCartesianAdjointEquationTerm()

Method Details

getRatesContribution

public double[] getRatesContribution(AbsoluteDate date,
 double[] stateVariables,
 double[] adjointVariables,
 Frame frame)

Computes the contribution to the rates of the adjoint variables.

Specified by:

getRatesContribution in interface CartesianAdjointEquationTerm

Parameters:

date - date

stateVariables - state variables

adjointVariables - adjoint variables

frame - propagation frame

Returns:

contribution to the adjoint derivative vector

getHamiltonianContribution

public double getHamiltonianContribution(AbsoluteDate date,
 double[] stateVariables,
 double[] adjointVariables,
 Frame frame)

Computes the contribution to the Hamiltonian.

Specified by:

getHamiltonianContribution in interface CartesianAdjointEquationTerm

Parameters:

date - date

stateVariables - state variables

adjointVariables - adjoint variables

frame - propagation frame

Returns:

contribution to the Hamiltonian

getAcceleration

protected abstract Vector3D getAcceleration(AbsoluteDate date,
 double[] stateVariables,
 Frame frame)

Compute the acceleration vector.

Parameters:

date - date

stateVariables - state variables

frame - propagation frame

Returns:

acceleration vector

getFieldRatesContribution

public <T extends CalculusFieldElement<T>> T[] getFieldRatesContribution(FieldAbsoluteDate<T> date,
 T[] stateVariables,
 T[] adjointVariables,
 Frame frame)

Computes the contribution to the rates of the adjoint variables.

Specified by:

getFieldRatesContribution in interface CartesianAdjointEquationTerm

Type Parameters:

T - field type

Parameters:

date - date

stateVariables - state variables

adjointVariables - adjoint variables

frame - propagation frame

Returns:

contribution to the adjoint derivative vector

getFieldHamiltonianContribution

public <T extends CalculusFieldElement<T>> T getFieldHamiltonianContribution(FieldAbsoluteDate<T> date,
 T[] stateVariables,
 T[] adjointVariables,
 Frame frame)

Computes the contribution to the Hamiltonian.

Specified by:

getFieldHamiltonianContribution in interface CartesianAdjointEquationTerm

Type Parameters:

T - field type

Parameters:

date - date

stateVariables - state variables

adjointVariables - adjoint variables

frame - propagation frame

Returns:

contribution to the Hamiltonian

getFieldAcceleration

protected abstract <T extends CalculusFieldElement<T>>
FieldVector3D<T> getFieldAcceleration(FieldAbsoluteDate<T> date,
 T[] stateVariables,
 Frame frame)

Compute the acceleration vector.

Type Parameters:

T - field type

Parameters:

date - date

stateVariables - state variables

frame - propagation frame

Returns:

acceleration vector

buildGradientCartesianVector

protected static Gradient[] buildGradientCartesianVector(double[] stateVariables)

Build a Cartesian vector whose components are independent variables for automatic differentiation at order 1.

Parameters:

stateVariables - Cartesian variables

Returns:

vector of independent variables

buildFieldGradientCartesianVector

protected static <T extends CalculusFieldElement<T>>
FieldGradient<T>[] buildFieldGradientCartesianVector(T[] stateVariables)

Build a Cartesian vector whose components are independent variables for automatic differentiation at order 1.

Type Parameters:

T - field type

Parameters:

stateVariables - Cartesian variables

Returns:

vector of independent variables