Package org.orekit.control.indirect.shooting

Class NewtonFixedBoundaryCartesianSingleShooting

java.lang.Object

org.orekit.control.indirect.shooting.AbstractIndirectShooting

org.orekit.control.indirect.shooting.AbstractFixedInitialCartesianSingleShooting

org.orekit.control.indirect.shooting.AbstractFixedBoundaryCartesianSingleShooting

org.orekit.control.indirect.shooting.NewtonFixedBoundaryCartesianSingleShooting

public class NewtonFixedBoundaryCartesianSingleShooting
extends AbstractFixedBoundaryCartesianSingleShooting

Class for indirect single shooting methods with Cartesian coordinates for fixed time fixed boundary. Update is the classical Newton-Raphson one. It is computed using an LU matrix decomposition.

Since:

12.2

Author:

Romain Serra

Field Summary

Fields inherited from class org.orekit.control.indirect.shooting.AbstractIndirectShooting

DEFAULT_TOLERANCE_MASS_ADJOINT

Constructor Summary

Constructors

Constructor	Description
NewtonFixedBoundaryCartesianSingleShooting(ShootingPropagationSettings propagationSettings, FixedTimeBoundaryOrbits boundaryConditions, CartesianBoundaryConditionChecker convergenceChecker)	Constructor with boundary conditions as orbits.
NewtonFixedBoundaryCartesianSingleShooting(ShootingPropagationSettings propagationSettings, FixedTimeCartesianBoundaryStates boundaryConditions, CartesianBoundaryConditionChecker convergenceChecker)	Constructor with boundary conditions as orbits.

Method Summary

Modifier and Type	Method	Description
int	getMaximumIterationCount()	Returns the maximum number of iterations.
double	getSingularityThreshold()	Getter for singularity threshold in LU decomposition.
void	setSingularityThreshold(double singularityThreshold)	Setter for singularity threshold in LU decomposition.
void	setStepFactor(double stepFactor)	Setter for the step factor.
protected double[]	updateShootingVariables(double[] originalShootingVariables, FieldSpacecraftState<Gradient> fieldTerminalState)	Update shooting variables.

Methods inherited from class org.orekit.control.indirect.shooting.AbstractFixedBoundaryCartesianSingleShooting

computeCandidateSolution, getConditionChecker, getScalePositionDefects, getScaleVelocityDefects, getTerminalCartesianState, setScalePositionDefects, setScaleVelocityDefects, setToleranceMassAdjoint

Methods inherited from class org.orekit.control.indirect.shooting.AbstractFixedInitialCartesianSingleShooting

buildFieldODE, buildPropagator, createFieldInitialStateWithMassAndAdjoint, createFieldState, createInitialStateWithMass, getScales, solve, solve

Methods inherited from class org.orekit.control.indirect.shooting.AbstractIndirectShooting

buildFieldIntegrator, getPropagationSettings

Methods inherited from class java.lang.Object

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

Constructor Detail

NewtonFixedBoundaryCartesianSingleShooting

public NewtonFixedBoundaryCartesianSingleShooting(ShootingPropagationSettings propagationSettings,
                                                  FixedTimeCartesianBoundaryStates boundaryConditions,
                                                  CartesianBoundaryConditionChecker convergenceChecker)

Constructor with boundary conditions as orbits.

Parameters:

propagationSettings - propagation settings

boundaryConditions - boundary conditions as FixedTimeCartesianBoundaryStates

convergenceChecker - convergence checker

NewtonFixedBoundaryCartesianSingleShooting

public NewtonFixedBoundaryCartesianSingleShooting(ShootingPropagationSettings propagationSettings,
                                                  FixedTimeBoundaryOrbits boundaryConditions,
                                                  CartesianBoundaryConditionChecker convergenceChecker)

Constructor with boundary conditions as orbits.

Parameters:

propagationSettings - propagation settings

boundaryConditions - boundary conditions as FixedTimeBoundaryOrbits

convergenceChecker - convergence checker

Method Detail

getMaximumIterationCount

public int getMaximumIterationCount()

Description copied from class: AbstractFixedInitialCartesianSingleShooting

Returns the maximum number of iterations.

Specified by:

getMaximumIterationCount in class AbstractFixedInitialCartesianSingleShooting

Returns:

maximum iterations

setSingularityThreshold

public void setSingularityThreshold(double singularityThreshold)

Setter for singularity threshold in LU decomposition.

Parameters:

singularityThreshold - new threshold value

Since:

13.0

getSingularityThreshold

public double getSingularityThreshold()

Getter for singularity threshold in LU decomposition.

Returns:

threshold

Since:

13.0

setStepFactor

public void setStepFactor(double stepFactor)

Setter for the step factor.

Parameters:

stepFactor - new value for the step factor

Since:

13.0

updateShootingVariables

protected double[] updateShootingVariables(double[] originalShootingVariables,
                                           FieldSpacecraftState<Gradient> fieldTerminalState)

Update shooting variables.

Specified by:

updateShootingVariables in class AbstractFixedInitialCartesianSingleShooting

Parameters:

originalShootingVariables - original shooting variables (before update)

fieldTerminalState - final state of gradient propagation

Returns:

updated shooting variables