fr.cnes.sirius.patrius.covariance

Class BasicOrbitalCovarianceProvider

java.lang.Object

fr.cnes.sirius.patrius.covariance.BasicOrbitalCovarianceProvider

All Implemented Interfaces:

OrbitalCovarianceProvider, PVCoordinatesProvider, Serializable

public class BasicOrbitalCovarianceProvider
extends Object
implements OrbitalCovarianceProvider

This class implements OrbitalCovarianceProvider by transforming an initial covariance with the partial derivatives of a spacecraft state provider.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BasicOrbitalCovarianceProvider(Covariance initialCovariance, SpacecraftStateProvider scProvider, JacobiansMapper mapper) Constructor

Method Summary

Modifier and Type	Method and Description
Frame	getNativeFrame(AbsoluteDate date) Get the native frame, i.e. the raw frame in which PVCoordinates are expressed before transformation to user output frame.
OrbitalCovariance	getOrbitalCovariance(AbsoluteDate date) Getter for the OrbitalCovariance at the provided date.

Methods inherited from class java.lang.Object

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

Methods inherited from interface fr.cnes.sirius.patrius.covariance.OrbitalCovarianceProvider

getPVCoordinates

Constructor Detail

BasicOrbitalCovarianceProvider

public BasicOrbitalCovarianceProvider(Covariance initialCovariance,
                                      SpacecraftStateProvider scProvider,
                                      JacobiansMapper mapper)

Constructor

Parameters:

initialCovariance - The initial covariance to propagate

scProvider - The spacecraft state provider used to propagate the initial covariance. The partial derivatives of the provider must be consistent with the initial covariance, i.e. must have the same date, frame, orbit type and position angle.

mapper - The mapper used to extract partial derivatives from the spacecraft state

Method Detail

getNativeFrame

public Frame getNativeFrame(AbsoluteDate date)
                     throws PatriusException

Get the native frame, i.e. the raw frame in which PVCoordinates are expressed before transformation to user output frame.

Specified by:

getNativeFrame in interface PVCoordinatesProvider

Parameters:

date - a date

Returns:

the native frame

Throws:

PatriusException - thrown if native frame is undefined or unknown

getOrbitalCovariance

public OrbitalCovariance getOrbitalCovariance(AbsoluteDate date)
                                       throws PatriusException

Getter for the OrbitalCovariance at the provided date.

Specified by:

getOrbitalCovariance in interface OrbitalCovarianceProvider

Parameters:

date - The date at which the orbital covariance is wanted

Returns:

the orbital covariance at the provided date

Throws:

PatriusException - if orbital covariance cannot be computed at the given date