org.orekit.propagation.numerical
Class Jacobianizer

java.lang.Object
  org.orekit.parameter.Parameterizable
      org.orekit.parameter.JacobiansParameterizable
          org.orekit.propagation.numerical.Jacobianizer

All Implemented Interfaces:

Serializable, IJacobiansParameterizable, IParameterizable

public class Jacobianizer
extends JacobiansParameterizable

Class enabling basic ForceModel instances to be used when processing spacecraft state partial derivatives.

Author:

Véronique Pommier-Maurussane

See Also:

Serialized Form

Constructor Summary

Jacobianizer(ForceModel forceModel, Collection<ParameterConfiguration> paramsAndSteps, double hPos)
Simple constructor.

Method Summary

void	addDAccDParam(SpacecraftState s, Parameter param, double[] dAccdParam) Compute acceleration derivatives with respect to additional parameters.
void	addDAccDState(SpacecraftState s, double[][] dAccdPos, double[][] dAccdVel) Compute acceleration derivatives with respect to state parameters.

Methods inherited from class org.orekit.parameter.JacobiansParameterizable

addJacobiansParameter, addJacobiansParameter, addJacobiansParameter, supportsJacobianParameter

Methods inherited from class org.orekit.parameter.Parameterizable

addParameter, getParameters, supportsParameter

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.parameter.IParameterizable

getParameters, supportsParameter

Constructor Detail

Jacobianizer

public Jacobianizer(ForceModel forceModel,
                    Collection<ParameterConfiguration> paramsAndSteps,
                    double hPos)

Simple constructor.

Parameters:

forceModel - force model instance to wrap

paramsAndSteps - collection of parameters and their associated steps

hPos - step used for finite difference computation with respect to spacecraft position (m)

Method Detail

addDAccDState

public void addDAccDState(SpacecraftState s,
                          double[][] dAccdPos,
                          double[][] dAccdVel)
                   throws OrekitException

Compute acceleration derivatives with respect to state parameters.

Parameters:

s - spacecraft state

dAccdPos - acceleration derivatives with respect to position

dAccdVel - acceleration derivatives with respect to velocity

Throws:

OrekitException - if derivatives cannot be computed

addDAccDParam

public void addDAccDParam(SpacecraftState s,
                          Parameter param,
                          double[] dAccdParam)
                   throws OrekitException

Compute acceleration derivatives with respect to additional parameters.

Parameters:

s - spacecraft state

param - the parameter with respect to which derivatives are required

dAccdParam - acceleration derivatives with respect to specified parameters

Throws:

OrekitException - if derivatives cannot be computed