org.orekit.propagation.numerical

Class AbsoluteJacobiansMapper

java.lang.Object

org.orekit.propagation.integration.AbstractJacobiansMapper

org.orekit.propagation.numerical.JacobiansMapper

org.orekit.propagation.numerical.AbsoluteJacobiansMapper

public class AbsoluteJacobiansMapper
extends JacobiansMapper

Mapper between two-dimensional Jacobian matrices and one-dimensional additional state arrays.

This class does not hold the states by itself. Instances of this class are guaranteed to be immutable.

Since:

10.2

Author:

Vincent Mouraux

See Also:

PartialDerivativesEquations, NumericalPropagator, SpacecraftState.getAdditionalState(String), AbstractPropagator

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATE_DIMENSION State dimension, fixed to 6.

Constructor Summary

Constructors

Constructor and Description
AbsoluteJacobiansMapper(String name, ParameterDriversList parameters) Simple constructor.

Method Summary

Modifier and Type	Method and Description
protected double[][]	getConversionJacobian(SpacecraftState state) Get the conversion Jacobian between state parameters and parameters used for derivatives.

Methods inherited from class org.orekit.propagation.numerical.JacobiansMapper

getParametersJacobian, getStateJacobian, setInitialJacobians

Methods inherited from class org.orekit.propagation.integration.AbstractJacobiansMapper

analyticalDerivatives, getAdditionalStateDimension, getName, getParameters

Methods inherited from class java.lang.Object

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

Field Detail

STATE_DIMENSION

public static final int STATE_DIMENSION

State dimension, fixed to 6.

See Also:

Constant Field Values

Constructor Detail

AbsoluteJacobiansMapper

public AbsoluteJacobiansMapper(String name,
                               ParameterDriversList parameters)

Simple constructor.

Parameters:

name - name of the Jacobians

parameters - selected parameters for Jacobian computation

Method Detail

getConversionJacobian

protected double[][] getConversionJacobian(SpacecraftState state)

Get the conversion Jacobian between state parameters and parameters used for derivatives.

For DSST and TLE propagators, state parameters and parameters used for derivatives are the same, so the Jocabian is simply the identity.

For Numerical propagator, parameters used for derivatives are cartesian and they can be different from state parameters because the numerical propagator can accept different type of orbits.

Overrides:

getConversionJacobian in class JacobiansMapper

Parameters:

state - spacecraft state

Returns:

conversion Jacobian