Package org.orekit.propagation.covariance

Class LinearKeplerianCovarianceHandler

java.lang.Object

org.orekit.propagation.covariance.LinearKeplerianCovarianceHandler

All Implemented Interfaces:

OrekitFixedStepHandler

public class LinearKeplerianCovarianceHandler
extends Object
implements OrekitFixedStepHandler

Class implementing step handlers to propagate orbital covariance using linearized Keplerian motion, no matter the propagation model. Although less precise than using the same perturbations than the propagator, it is more computationally performant.

Since:

13.1

Author:

Romain Serra

See Also:

• StateCovarianceMatrixProvider

Constructor Summary

Constructors

Constructor	Description
LinearKeplerianCovarianceHandler(StateCovariance initialCovariance)	Constructor.

Method Summary

Modifier and Type	Method	Description
List<StateCovariance>	getStatesCovariances()	Gets a copy of the covariances.
void	handleStep(SpacecraftState currentState)	Handle the current step.
void	init(SpacecraftState s0, AbsoluteDate t, double dt)	Initialize step handler at the start of a propagation.
OrekitStepHandler	toOrekitStepHandler()	Convert into a non-fixed step handler, based on the instance (so do not use it elsewhere for something else).

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.propagation.sampling.OrekitFixedStepHandler

finish

Constructor Details

LinearKeplerianCovarianceHandler

public LinearKeplerianCovarianceHandler(StateCovariance initialCovariance)

Constructor.

Parameters:

initialCovariance - initial orbital covariance

Method Details

getStatesCovariances

public List<StateCovariance> getStatesCovariances()

Gets a copy of the covariances.

Returns:

state covariances

init

public void init(SpacecraftState s0,
 AbsoluteDate t,
 double dt)

Description copied from interface: OrekitFixedStepHandler

Initialize step handler at the start of a propagation.

This method is called once at the start of the propagation. It may be used by the step handler to initialize some internal data if needed.

Specified by:

init in interface OrekitFixedStepHandler

Parameters:

s0 - initial state

t - target time for the integration

dt - the duration in seconds of the fixed step. This value is positive even if propagation is backwards.

handleStep

public void handleStep(SpacecraftState currentState)

Description copied from interface: OrekitFixedStepHandler

Handle the current step.

Specified by:

handleStep in interface OrekitFixedStepHandler

Parameters:

currentState - current state at step time

toOrekitStepHandler

public OrekitStepHandler toOrekitStepHandler()

Convert into a non-fixed step handler, based on the instance (so do not use it elsewhere for something else).

Returns:

fixed-step handler

See Also:

• OrekitStepHandler