org.orekit.time
Class LocalTime

java.lang.Object
  org.orekit.time.LocalTime

public class LocalTime
extends Object

This class provides methods to compute local time.

Since:

3.0

Version:

$Id: LocalTime.java 13352 2015-05-13 15:33:59Z bignon $

Author:

Emmanuel Bignon

Concurrency :

not thread-safe

Constructor Summary

LocalTime(PVCoordinatesProvider sunEphemeris)
Constructor

Method Summary

double	computeMeanLocalTime(AbsoluteDate date, Vector3D pos) Compute mean local time in TIRF frame.
double	computeMeanLocalTime(AbsoluteDate date, Vector3D pos, Frame frame, double sideralTime) Compute mean local time in provided frame.
double	computeTrueLocalTime(AbsoluteDate date, Vector3D pos) Compute true local time in TIRF frame.
double	computeTrueLocalTime(AbsoluteDate date, Vector3D pos, Frame frame) Compute true local time in provided frame in the range ] -43200s; 43200s ].

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalTime

public LocalTime(PVCoordinatesProvider sunEphemeris)

Constructor

Parameters:

sunEphemeris - Sun ephemeris

Method Detail

computeTrueLocalTime

public double computeTrueLocalTime(AbsoluteDate date,
                                   Vector3D pos,
                                   Frame frame)
                            throws OrekitException

Compute true local time in provided frame in the range ] -43200s; 43200s ].

Parameters:

date - date

pos - position in provided frame frame

frame - frame in which true local time will be returned

Returns:

true local time in provided frame (in s)

Throws:

OrekitException - thrown if Sun PV coordinates could not be retrieved

computeTrueLocalTime

public double computeTrueLocalTime(AbsoluteDate date,
                                   Vector3D pos)
                            throws OrekitException

Compute true local time in TIRF frame.

Parameters:

date - date

pos - position in TIRF frame

Returns:

true local time in TIRF (in s)

Throws:

OrekitException - thrown if TIRF frame could not be retrieved or Sun PV coordinates could not be retrieved

computeMeanLocalTime

public double computeMeanLocalTime(AbsoluteDate date,
                                   Vector3D pos,
                                   Frame frame,
                                   double sideralTime)
                            throws OrekitException

Compute mean local time in provided frame.

Parameters:

date - date

pos - position in provided frame

frame - frame in which mean local time will be returned

sideralTime - sideral time expressed in provided frame (in rad)

Returns:

mean local time in provided frame (in s)

Throws:

OrekitException - thrown if true local time could not be computed

computeMeanLocalTime

public double computeMeanLocalTime(AbsoluteDate date,
                                   Vector3D pos)
                            throws OrekitException

Compute mean local time in TIRF frame.

Parameters:

date - date

pos - position in provided frame

Returns:

mean local time in TIRF frame (in s)

Throws:

OrekitException - thrown if true local time or equation of time could not be computed