Package gaiasky.util.gaia

Class HermiteInterpolatedAttitudeDataServer

java.lang.Object

gaiasky.util.gaia.BaseAttitudeDataServer<A>

gaiasky.util.gaia.NumericalAttitudeDataServer<IAttitude>

gaiasky.util.gaia.HermiteInterpolatedAttitudeDataServer

Direct Known Subclasses:

MslAttitudeDataServer

public abstract class HermiteInterpolatedAttitudeDataServer
extends NumericalAttitudeDataServer<IAttitude>

This abstract class contains the fields needed to store numerical attitude in the form of arrays (q and SRS rates), and a method to calculate the attitude for any given time using cubic Hermite interpolation

Field Summary

Fields

Modifier and Type	Field	Description
protected int	nT
protected double[]	qW
protected double[]	qX
protected double[]	qY
protected double[]	qZ
protected double[]	rateX
protected double[]	rateY
protected double[]	rateZ
protected long[]	tNs

Fields inherited from class gaiasky.util.gaia.NumericalAttitudeDataServer

gtis

Fields inherited from class gaiasky.util.gaia.BaseAttitudeDataServer

initialized, initialRequestedTimeContext, nativeTimeContext, withUncertaintiesCorrelations

Constructor Summary

Constructors

Constructor	Description
HermiteInterpolatedAttitudeDataServer(long tStart, Duration tLength)	Constructor for a given start time and mission length

Method Summary

Modifier and Type	Method	Description
IAttitude	getAttitudeNative(long t)	Evaluate the attitude in the native time system of the server
abstract void	initialize()	Any numerical attitude needs to be initialized

Methods inherited from class gaiasky.util.gaia.NumericalAttitudeDataServer

getGtis, getStartTime, getStopTime, isValid

Methods inherited from class gaiasky.util.gaia.BaseAttitudeDataServer

getAttitude, getAttitude, getRefTime, isInitialized, setInitialized, setRefTime

Methods inherited from class java.lang.Object

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

Field Details

nT

protected int nT

tNs

protected long[] tNs

qX

protected double[] qX

qY

protected double[] qY

qZ

protected double[] qZ

qW

protected double[] qW

rateX

protected double[] rateX

rateY

protected double[] rateY

rateZ

protected double[] rateZ

Constructor Details

HermiteInterpolatedAttitudeDataServer

public HermiteInterpolatedAttitudeDataServer(long tStart,
 Duration tLength)

Constructor for a given start time and mission length

Parameters:

tStart - start time of the valid attitude interval

tLength - length of the valid attitude interval

Method Details

initialize

public abstract void initialize()
                         throws RuntimeException

Description copied from class: NumericalAttitudeDataServer

Any numerical attitude needs to be initialized

Specified by:

initialize in class NumericalAttitudeDataServer<IAttitude>

Throws:

RuntimeException - initialization fails

See Also:

• This method will compute the attitude and attitude rate at discrete points and store in the arrays tNs, qX, rateX, etc

getAttitudeNative

public IAttitude getAttitudeNative(long t)
                            throws RuntimeException

Description copied from class: BaseAttitudeDataServer

Evaluate the attitude in the native time system of the server

Specified by:

getAttitudeNative in class BaseAttitudeDataServer<IAttitude>

Parameters:

t - - the time elapsed since the epoch of J2010 in ns (TCB)

Returns:

attitude for the given time

Throws:

RuntimeException

See Also:

• BaseAttitudeDataServer.getAttitude(long)