fr.cnes.sirius.patrius.stela.bodies

Class EarthRotation

java.lang.Object

fr.cnes.sirius.patrius.stela.bodies.EarthRotation

public final class EarthRotation
extends Object

This class represents the Earth rotation.
It is used to compute the Earth rotation rate when computing the atmospheric drag acceleration.

Since:

1.3

Version:

$Id$

Author:

Vincent Ruch, Tiziana Sabatini, Emmanuel Bignon

See Also:

StelaAeroModel

Concurrency :

immutable

Method Summary

Modifier and Type	Method and Description
static double	getERA(AbsoluteDate date) Compute the Earth Rotation Angle (ERA) using Capitaine model (2000).
static double	getERADerivative(AbsoluteDate date) Compute the Earth Rotation Angle (ERA) derivative.
static double	getGMST(AbsoluteDate date) Compute Greenwich Mean Sideral Time.
static double	getGMSTDerivative(AbsoluteDate date) Compute Greenwich Mean Sideral Time derivative.

Methods inherited from class java.lang.Object

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

Method Detail

getGMST

public static double getGMST(AbsoluteDate date)

Compute Greenwich Mean Sideral Time.

Parameters:

date - a date

Returns:

Greenwich Mean Sideral Time (rad)

getGMSTDerivative

public static double getGMSTDerivative(AbsoluteDate date)

Compute Greenwich Mean Sideral Time derivative.

Parameters:

date - a date

Returns:

Greenwich Mean Sideral Time derivative (rad/s)

getERA

public static double getERA(AbsoluteDate date)

Compute the Earth Rotation Angle (ERA) using Capitaine model (2000).

Parameters:

date - a date

Returns:

Earth Rotation Angle (rad)

getERADerivative

public static double getERADerivative(AbsoluteDate date)

Compute the Earth Rotation Angle (ERA) derivative.

Parameters:

date - a date

Returns:

the Earth Rotation Angle derivative (rad/s)