org.orekit.attitudes
Class RelativeTabulatedAttitudeLaw

java.lang.Object
  org.orekit.attitudes.RelativeTabulatedAttitudeLaw

All Implemented Interfaces:

Serializable, AttitudeLaw, AttitudeProvider

public class RelativeTabulatedAttitudeLaw
extends Object
implements AttitudeLaw

This class represents a relative tabulated attitude law version "attitudeLeg", with an interval of validity (whose borders are closed points) and attitude laws outside this interval of validity, which can be of two types : a ConstantAttitudeLaw, or an ExtrapolatedAttitudeLaw (private class)

Since:

3.1

Version:

$Id: RelativeTabulatedAttitudeLaw.java 17582 2017-05-10 12:58:16Z bignon $

Author:

galpint

See Also:

Serialized Form

Concurrency :

conditionally thread-safe

Concurrency comment :

The use of an RelativeTabulatedAttitudeLaw makes it thread-safe only if the AttitudeLeglaw is

Nested Class Summary

static class

RelativeTabulatedAttitudeLaw.AroundAttitudeType Enumeration of the existing constraint types

Constructor Summary

RelativeTabulatedAttitudeLaw(AbsoluteDate refDate, List<Pair<Double,AngularCoordinates>> angularCoordinates, Frame frame, RelativeTabulatedAttitudeLaw.AroundAttitudeType lawBefore, RelativeTabulatedAttitudeLaw.AroundAttitudeType lawAfter)
Create a RelativeTabulatedAttitudeLaw object with list of Angular Coordinates (during the interval of validity), a law before the interval and a law after the interval.

RelativeTabulatedAttitudeLaw(Frame frame, AbsoluteDate refDate, List<Pair<Double,Rotation>> orientations, RelativeTabulatedAttitudeLaw.AroundAttitudeType lawBefore, RelativeTabulatedAttitudeLaw.AroundAttitudeType lawAfter)
Create a RelativeTabulatedAttitudeLaw object with list of rotations (during the interval of validity), a law before the interval and a law after the interval.

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.
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

RelativeTabulatedAttitudeLaw

public RelativeTabulatedAttitudeLaw(Frame frame,
                                    AbsoluteDate refDate,
                                    List<Pair<Double,Rotation>> orientations,
                                    RelativeTabulatedAttitudeLaw.AroundAttitudeType lawBefore,
                                    RelativeTabulatedAttitudeLaw.AroundAttitudeType lawAfter)
                             throws OrekitException

Create a RelativeTabulatedAttitudeLaw object with list of rotations (during the interval of validity), a law before the interval and a law after the interval.

Parameters:

refDate - reference date

orientations - List of rotations

frame - reference frame

lawBefore - Attitude law used before the reference date

lawAfter - Attitude law used after the date corresponding to the last attitude

Throws:

OrekitException - if not enough data for Hermite interpolation

Since:

3.1

RelativeTabulatedAttitudeLaw

public RelativeTabulatedAttitudeLaw(AbsoluteDate refDate,
                                    List<Pair<Double,AngularCoordinates>> angularCoordinates,
                                    Frame frame,
                                    RelativeTabulatedAttitudeLaw.AroundAttitudeType lawBefore,
                                    RelativeTabulatedAttitudeLaw.AroundAttitudeType lawAfter)
                             throws OrekitException

Create a RelativeTabulatedAttitudeLaw object with list of Angular Coordinates (during the interval of validity), a law before the interval and a law after the interval.

Parameters:

refDate - reference date

angularCoordinates - List of angular coordinates

frame - reference frame

lawBefore - Attitude law used before the reference date

lawAfter - Attitude law used after the date corresponding to the last attitude

Throws:

OrekitException - if not enough data for Hermite interpolation

Since:

3.1

Method Detail

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