org.orekit.frames.configuration.precessionnutation
Class NoPrecessionNutation

java.lang.Object
  org.orekit.frames.configuration.precessionnutation.NoPrecessionNutation

All Implemented Interfaces:

PrecessionNutationModel

public class NoPrecessionNutation
extends Object
implements PrecessionNutationModel

In this model the CIP doesnt move.

Since:

1.3

Version:

$Id: NoPrecessionNutation.java 17602 2017-05-18 08:25:23Z bignon $

Author:

Rami Houdroge

Constructor Summary

NoPrecessionNutation()

Method Summary

double[]	getCIPMotion(AbsoluteDate t) Compute the Celestial Intermediate pole motion in the GCRS.
double[]	getCIPMotionTimeDerivative(AbsoluteDate t) Compute the Celestial Intermediate pole motion in the GCRS.
FrameConvention	getOrigin() Get IERS model origin.
boolean	isConstant() Returns true if model uses constant rotation.
boolean	isDirect() Return computation type : direct or interpolated.

Methods inherited from class java.lang.Object

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

Constructor Detail

NoPrecessionNutation

public NoPrecessionNutation()

Method Detail

getCIPMotion

public double[] getCIPMotion(AbsoluteDate t)

Compute the Celestial Intermediate pole motion in the GCRS.

Specified by:

getCIPMotion in interface PrecessionNutationModel

Parameters:

t - date

Returns:

CIP motion as an array of doubles

getCIPMotionTimeDerivative

public double[] getCIPMotionTimeDerivative(AbsoluteDate t)

Compute the Celestial Intermediate pole motion in the GCRS.

Specified by:

getCIPMotionTimeDerivative in interface PrecessionNutationModel

Parameters:

t - date

Returns:

CIP motion time derivatives as an array of doubles

isDirect

public boolean isDirect()

Return computation type : direct or interpolated.

Specified by:

isDirect in interface PrecessionNutationModel

Returns:

true if direct computation, false if interpolated

getOrigin

public FrameConvention getOrigin()

Get IERS model origin.

Specified by:

getOrigin in interface PrecessionNutationModel

Returns:

IERS model origin

isConstant

public boolean isConstant()

Returns true if model uses constant rotation.

Specified by:

isConstant in interface PrecessionNutationModel

Returns:

true if model uses constant rotation