fr.cnes.sirius.patrius.groundstation
Class GeometricStationAntenna

java.lang.Object
  fr.cnes.sirius.patrius.groundstation.GeometricStationAntenna

All Implemented Interfaces:

PVCoordinatesProvider

public class GeometricStationAntenna
extends Object
implements PVCoordinatesProvider

Class representing an a geometric model for a ground station antenna.
It is used in reverse station visibility event detection.

Since:

1.2

Version:

$Id: GeometricStationAntenna.java 7131 2012-12-12 15:02:39Z HoudrogeR $

Author:

Thomas Trapier

See Also:

StationToSatMutualVisibilityDetector

Concurrency :

not thread-safe

Concurrency comment :

link to the tree of frames

Constructor Summary

GeometricStationAntenna(TopocentricFrame topoFrame, double[][] azimElevMask)
Constructor of the ground station antenna (for reverse visibility detection)

GeometricStationAntenna(TopocentricFrame topoFrame, IFieldOfView fieldOfView)
Constructor of the ground station antenna (for reverse visibility detection)

Method Summary

IFieldOfView	getFOV()
PVCoordinates	getPVCoordinates(AbsoluteDate date, Frame frame) Get the PVCoordinates of the station antenna in the selected frame.
TopocentricFrame	getTopoFrame()

Methods inherited from class java.lang.Object

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

Constructor Detail

GeometricStationAntenna

public GeometricStationAntenna(TopocentricFrame topoFrame,
                               IFieldOfView fieldOfView)

Constructor of the ground station antenna (for reverse visibility detection)

Parameters:

topoFrame - topocentric frame of the station

fieldOfView - sensor field of view in defined in the topocentric frame

GeometricStationAntenna

public GeometricStationAntenna(TopocentricFrame topoFrame,
                               double[][] azimElevMask)

Constructor of the ground station antenna (for reverse visibility detection)

Parameters:

topoFrame - topocentric frame of the station

azimElevMask - the azimuth - elevation mask (rad)

Method Detail

getTopoFrame

public TopocentricFrame getTopoFrame()

Returns:

the station topocentric frame

getFOV

public IFieldOfView getFOV()

Returns:

the field of view

getPVCoordinates

public PVCoordinates getPVCoordinates(AbsoluteDate date,
                                      Frame frame)
                               throws OrekitException

Get the PVCoordinates of the station antenna in the selected frame.

Specified by:

getPVCoordinates in interface PVCoordinatesProvider

Parameters:

date - current date

frame - the frame where to define the position

Returns:

position/velocity of the body (m and m/s)

Throws:

OrekitException - if position cannot be computed in given frame