Package gaiasky.util.gaia

Class Epsl

java.lang.Object

gaiasky.util.gaia.BaseAttitudeDataServer<Attitude>

gaiasky.util.gaia.AnalyticalAttitudeDataServer

gaiasky.util.gaia.Epsl

public class Epsl
extends AnalyticalAttitudeDataServer

Implementation of the Ecliptic Pole Scanning Law (EPSL)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Epsl.Mode	Ecliptic pole scanning has two modes: PRECEDING (revolving phase angle = 0) and FOLLOWING (revolving phase angle = 180 deg).

Field Summary

Fields inherited from class gaiasky.util.gaia.AnalyticalAttitudeDataServer

ARCSEC_PER_S_TO_DEG_PER_DAY, FOUR_PI, nslSun, OBLIQUITY_DEG, OBLIQUITY_RAD, PI, PI_HALF, targetScanPeriod, TWO_PI, X_AXIS, Y_AXIS, Z_AXIS

Fields inherited from class gaiasky.util.gaia.BaseAttitudeDataServer

initialized, initialRequestedTimeContext, nativeTimeContext, withUncertaintiesCorrelations

Constructor Summary

Constructors

Constructor	Description
Epsl()	Default constructor (uses Mode = PRECEDING):
Epsl(Epsl.Mode mode)	Constructor that allows to initialize preceding or following EPSL:

Method Summary

Modifier and Type	Method	Description
Attitude	getAttitudeNative(long t)	Evaluate the attitude in the native time system of the server
Epsl.Mode	getMode()
double	getOmegaFull()
double	getOmegaMod4Pi()
void	setDefault()	Set all parameters to default values (from GaiaParam)

Methods inherited from class gaiasky.util.gaia.AnalyticalAttitudeDataServer

getNominalSunVector, getNuRef, getOmegaRef, getRefTime, getTargetPrecessionRate, getTargetScanPeriod, getTargetScanRate, getXiRef, inGap, setNuRef, setOmegaRef, setRefTime, setTargetPrecessionRate, setTargetScanPeriod, setTargetScanRate, setXiRef

Methods inherited from class gaiasky.util.gaia.BaseAttitudeDataServer

getAttitude, getAttitude, isInitialized, setInitialized

Methods inherited from class java.lang.Object

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

Constructor Details

Epsl

public Epsl()

Default constructor (uses Mode = PRECEDING):

Epsl

public Epsl(Epsl.Mode mode)

Constructor that allows to initialize preceding or following EPSL:

Parameters:

mode - PRECEDING or FOLLOWING

Method Details

getAttitudeNative

public Attitude getAttitudeNative(long t)

Description copied from class: BaseAttitudeDataServer

Evaluate the attitude in the native time system of the server

Specified by:

getAttitudeNative in class BaseAttitudeDataServer<Attitude>

Parameters:

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

Returns:

attitude for the given time

See Also:

BaseAttitudeDataServer.getAttitude(long)

getMode

public Epsl.Mode getMode()

Returns:

current EPSL mode

setDefault

public void setDefault()

Description copied from class: AnalyticalAttitudeDataServer

Set all parameters to default values (from GaiaParam)

Overrides:

setDefault in class AnalyticalAttitudeDataServer

See Also:

AnalyticalAttitudeDataServer.setDefault()

getOmegaFull

public double getOmegaFull()

Returns:

non-truncated spin phase

getOmegaMod4Pi

public double getOmegaMod4Pi()

Returns:

spin phase normalised to range [0, 4 Pi]