org.orekit.attitudes
Class RelativeTabulatedAttitudeLeg

java.lang.Object
  org.orekit.attitudes.RelativeTabulatedAttitudeLeg

All Implemented Interfaces:

Serializable, AttitudeLeg, AttitudeProvider

public class RelativeTabulatedAttitudeLeg
extends Object
implements AttitudeLeg

This class implements the tabulated attitude leg relative to a reference date. WARNING : Double being less accurate than an AbsoluteDate, this class is less accurate than the TabulatedAttitude class.

Since:

3.1

Version:

$Id: RelativeTabulatedAttitudeLeg.java 15575 2016-03-10 15:09:27Z bignon $

Author:

galpint

See Also:

Serialized Form

Concurrency :

immutable

Constructor Summary

RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate, Frame frame, List<Pair<Double,AngularCoordinates>> angularCoordinates)
Build a RelativeTabulatedAttitudeLeg with a reference date, a list of angular coordinates associated with a double representing the time elapsed since the reference date.

RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate, List<Pair<Double,AngularCoordinates>> angularCoordinates, int nbInterpolationPoints, Frame frame)
Build a RelativeTabulatedAttitudeLeg with a reference date, a list of angular coordinates associated with a double representing the time elapsed since the reference date and a number of points used for interpolation.

RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate, List<Pair<Double,Rotation>> orientations, Frame frame)
Build a RelativeTabulatedAttitudeLeg with a reference date, a list of Rotations associated with a double representing the time elapsed since the reference date.

RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate, List<Pair<Double,Rotation>> orientations, Frame frame, int nbInterpolationPoints)
Build a RelativeTabulatedAttitudeLeg with a reference date, a list of Rotations associated with a double representing the time elapsed since the reference date and a number of points used for interpolation.

Method Summary

Attitude	getAttitude(Orbit orbit) Compute the attitude corresponding to an orbital state.
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame) Compute the attitude corresponding to an orbital state.
AbsoluteDateInterval	getTimeInterval() Return the time interval of validity
void	setSpinDerivativesComputation(boolean computeSpinDerivatives) Method to activate spin derivative computation.

Methods inherited from class java.lang.Object

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

Constructor Detail

RelativeTabulatedAttitudeLeg

public RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate,
                                    List<Pair<Double,Rotation>> orientations,
                                    Frame frame)
                             throws OrekitException

Build a RelativeTabulatedAttitudeLeg with a reference date, a list of Rotations associated with a double representing the time elapsed since the reference date. The number of points used for interpolation is the default one (defined in TabulatedAttitude) Rotations rates (set to 0's) will not be used for interpolation.

Parameters:

referenceDate - reference date

orientations - rotations. WARNING : these must be chronologically ordered.

frame - reference frame from which attitude is computed

Throws:

OrekitException - thrown if there is not enough data for Hermite interpolation

Since:

3.1

RelativeTabulatedAttitudeLeg

public RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate,
                                    List<Pair<Double,Rotation>> orientations,
                                    Frame frame,
                                    int nbInterpolationPoints)
                             throws OrekitException

Build a RelativeTabulatedAttitudeLeg with a reference date, a list of Rotations associated with a double representing the time elapsed since the reference date and a number of points used for interpolation. The List of angular coordinates is built with rotations rates set to 0's and rotations rates (set to 0's) will not be used for interpolation

Parameters:

referenceDate - reference date

orientations - rotations. WARNING : these must be chronologically ordered.

frame - reference frame from which attitude is computed

nbInterpolationPoints - nbInterpolationPoints number of points used for interpolation

Throws:

OrekitException - thrown if there is not enough data for Hermite interpolation

Since:

3.1

RelativeTabulatedAttitudeLeg

public RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate,
                                    Frame frame,
                                    List<Pair<Double,AngularCoordinates>> angularCoordinates)
                             throws OrekitException

Build a RelativeTabulatedAttitudeLeg with a reference date, a list of angular coordinates associated with a double representing the time elapsed since the reference date. The rotation rates will be used for interpolation. The number of points used for interpolation is the default one (defined in TabulatedAttitude)

Parameters:

referenceDate - reference date

angularCoordinates - angular coordinates. WARNING : these must be chronologically ordered.

frame - reference frame from which attitude is computed

Throws:

OrekitException - thrown if there is not enough data for Hermite interpolation

Since:

3.1

RelativeTabulatedAttitudeLeg

public RelativeTabulatedAttitudeLeg(AbsoluteDate referenceDate,
                                    List<Pair<Double,AngularCoordinates>> angularCoordinates,
                                    int nbInterpolationPoints,
                                    Frame frame)
                             throws OrekitException

Build a RelativeTabulatedAttitudeLeg with a reference date, a list of angular coordinates associated with a double representing the time elapsed since the reference date and a number of points used for interpolation. The rotation rates will be used for interpolation.

Parameters:

referenceDate - reference date

angularCoordinates - angular coordinates WARNING : these must be chronologically ordered.

frame - reference frame from which attitude is computed

nbInterpolationPoints - nbInterpolationPoints number of points used for interpolation

Throws:

OrekitException - thrown if there is not enough data for Hermite interpolation

Since:

3.1

Method Detail

getTimeInterval

public AbsoluteDateInterval getTimeInterval()
                                     throws OrekitException

Description copied from interface: AttitudeLeg

Return the time interval of validity

Specified by:

getTimeInterval in interface AttitudeLeg

Returns:

time interval of validity

Throws:

OrekitException - if the time interval is not computed (for a slew)

getAttitude

public Attitude getAttitude(PVCoordinatesProvider pvProv,
                            AbsoluteDate date,
                            Frame frame)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

getAttitude

public Attitude getAttitude(Orbit orbit)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Parameters:

orbit - current orbit

Returns:

attitude attitude on the current orbit

Throws:

OrekitException - if attitude cannot be computed

setSpinDerivativesComputation

public void setSpinDerivativesComputation(boolean computeSpinDerivatives)
                                   throws OrekitException

Method to activate spin derivative computation.

Specified by:

setSpinDerivativesComputation in interface AttitudeProvider

Parameters:

computeSpinDerivatives - true if spin derivatives should be computed

Throws:

OrekitException - if spin derivatives can not be computed