Package org.orekit.propagation.analytical.gnss.data

Class GLONASSAlmanac

java.lang.Object

org.orekit.propagation.analytical.gnss.data.GLONASSAlmanac

All Implemented Interfaces:

GLONASSOrbitalElements, TimeStamped

public class GLONASSAlmanac
extends Object
implements GLONASSOrbitalElements

This class holds a GLONASS almanac as read from .agl files.

Since:

10.0

Author:

Bryan Cazabonne

Constructor Summary

Constructors

Constructor	Description
GLONASSAlmanac(int channel, int health, int day, int month, int year, double ta, double lambda, double deltaI, double pa, double ecc, double deltaT, double deltaTDot, double tGlo2UTC, double tGPS2Glo, double tGlo)	Constructor.
GLONASSAlmanac(int channel, int health, int day, int month, int year, double ta, double lambda, double deltaI, double pa, double ecc, double deltaT, double deltaTDot, double tGlo2UTC, double tGPS2Glo, double tGlo, TimeScale glonass)	Constructor.

Method Summary

Modifier and Type	Method	Description
AbsoluteDate	getDate()	Get the date.
double	getDeltaI()	Get the correction to the mean value of inclination.
double	getDeltaT()	Get the correction to the mean value of Draconian period.
double	getDeltaTDot()	Get the rate of change of Draconian period.
double	getE()	Get the Eccentricity.
int	getFrequencyChannel()	Get the frequency channel.
double	getGlo2UTC()	Get the correction from GLONASS to UTC.
double	getGloOffset()	Get the correction of time relative to GLONASS system time.
double	getGPS2Glo()	Get the correction to GPS time relative GLONASS.
int	getHealth()	Get the Health status.
double	getLambda()	Get the longitude of ascending node of orbit.
int	getN4()	Get the number of the current four year interval.
int	getNa()	Get the number of the current day in a four year interval.
double	getPa()	Get the Argument of Perigee.
GLONASSAnalyticalPropagator	getPropagator()	Get the propagator corresponding to the navigation message.
GLONASSAnalyticalPropagator	getPropagator(DataContext context)	Get the propagator corresponding to the navigation message.
GLONASSAnalyticalPropagator	getPropagator(DataContext context, AttitudeProvider provider, Frame inertial, Frame bodyFixed, double mass)	Get the propagator corresponding to the navigation message.
double	getTime()	Get the Reference Time.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.propagation.analytical.gnss.data.GLONASSOrbitalElements

getGammaN, getIOD, getTN, getX, getXDot, getXDotDot, getY, getYDot, getYDotDot, getZ, getZDot, getZDotDot

Methods inherited from interface org.orekit.time.TimeStamped

durationFrom

Constructor Details

GLONASSAlmanac

@DefaultDataContext
public GLONASSAlmanac(int channel,
 int health,
 int day,
 int month,
 int year,
 double ta,
 double lambda,
 double deltaI,
 double pa,
 double ecc,
 double deltaT,
 double deltaTDot,
 double tGlo2UTC,
 double tGPS2Glo,
 double tGlo)

Constructor.

This method uses the default data context.

Parameters:

channel - the frequency channel from -7 to 6)

health - the Health status

day - the day of Almanac

month - the month of Almanac

year - the year of Almanac

ta - the reference time of the almanac (s)

lambda - the Greenwich longitude of ascending node of orbit (rad)

deltaI - the correction to the mean value of inclination (rad)

pa - the argument of perigee (rad)

ecc - the eccentricity

deltaT - the correction to the mean value of Draconian period (s)

deltaTDot - the rate of change of orbital period

tGlo2UTC - the correction from GLONASS to UTC (s)

tGPS2Glo - the correction to GPS time relative GLONASS (s)

tGlo - the correction of time relative to GLONASS system time (s)

See Also:

• GLONASSAlmanac(int, int, int, int, int, double, double, double, double, double, double, double, double, double, double, TimeScale)

GLONASSAlmanac

public GLONASSAlmanac(int channel,
 int health,
 int day,
 int month,
 int year,
 double ta,
 double lambda,
 double deltaI,
 double pa,
 double ecc,
 double deltaT,
 double deltaTDot,
 double tGlo2UTC,
 double tGPS2Glo,
 double tGlo,
 TimeScale glonass)

Constructor.

Parameters:

channel - the frequency channel from -7 to 6)

health - the Health status

day - the day of Almanac

month - the month of Almanac

year - the year of Almanac

ta - the reference time of the almanac (s)

lambda - the Greenwich longitude of ascending node of orbit (rad)

deltaI - the correction to the mean value of inclination (rad)

pa - the argument of perigee (rad)

ecc - the eccentricity

deltaT - the correction to the mean value of Draconian period (s)

deltaTDot - the rate of change of orbital period

tGlo2UTC - the correction from GLONASS to UTC (s)

tGPS2Glo - the correction to GPS time relative GLONASS (s)

tGlo - the correction of time relative to GLONASS system time (s)

glonass - GLONASS time scale.

Since:

10.1

Method Details

getPropagator

@DefaultDataContext
public GLONASSAnalyticalPropagator getPropagator()

Get the propagator corresponding to the navigation message.

The attitude provider is set by default to be aligned with the EME2000 frame.
The mass is set by default to the DEFAULT_MASS.
The data context is by default to the default data context.
The ECI frame is set by default to the EME2000 frame in the default data context.
The ECEF frame is set by default to the CIO/2010-based ITRF simple EOP in the default data context.

Returns:

the propagator corresponding to the navigation message

Since:

12.0

See Also:

• getPropagator(DataContext)
• getPropagator(DataContext, AttitudeProvider, Frame, Frame, double)

getPropagator

public GLONASSAnalyticalPropagator getPropagator(DataContext context)

Get the propagator corresponding to the navigation message.

The attitude provider is set by default to be aligned with the EME2000 frame.
The mass is set by default to the DEFAULT_MASS.
The ECI frame is set by default to the EME2000 frame.
The ECEF frame is set by default to the CIO/2010-based ITRF simple EOP.

Parameters:

context - the data context to use for frames and time scales.

Returns:

the propagator corresponding to the navigation message

Since:

12.0

See Also:

• getPropagator()
• getPropagator(DataContext, AttitudeProvider, Frame, Frame, double)

getPropagator

public GLONASSAnalyticalPropagator getPropagator(DataContext context,
 AttitudeProvider provider,
 Frame inertial,
 Frame bodyFixed,
 double mass)

Get the propagator corresponding to the navigation message.

Parameters:

context - the data context to use for frames and time scales.

provider - attitude provider

inertial - inertial frame, use to provide the propagated orbit

bodyFixed - body fixed frame, corresponding to the navigation message

mass - spacecraft mass in kg

Returns:

the propagator corresponding to the navigation message

Since:

12.0

See Also:

• getPropagator()
• getPropagator(DataContext)

getDate

public AbsoluteDate getDate()

Description copied from interface: TimeStamped

Get the date.

Specified by:

getDate in interface TimeStamped

Returns:

date attached to the object

getTime

public double getTime()

Description copied from interface: GLONASSOrbitalElements

Get the Reference Time.

Specified by:

getTime in interface GLONASSOrbitalElements

Returns:

the Reference Time (s)

getLambda

public double getLambda()

Description copied from interface: GLONASSOrbitalElements

Get the longitude of ascending node of orbit.

Specified by:

getLambda in interface GLONASSOrbitalElements

Returns:

the longitude of ascending node of orbit (rad)

getE

public double getE()

Description copied from interface: GLONASSOrbitalElements

Get the Eccentricity.

Specified by:

getE in interface GLONASSOrbitalElements

Returns:

the Eccentricity

getPa

public double getPa()

Description copied from interface: GLONASSOrbitalElements

Get the Argument of Perigee.

Specified by:

getPa in interface GLONASSOrbitalElements

Returns:

the Argument of Perigee (rad)

getDeltaI

public double getDeltaI()

Description copied from interface: GLONASSOrbitalElements

Get the correction to the mean value of inclination.

Specified by:

getDeltaI in interface GLONASSOrbitalElements

Returns:

the correction to the mean value of inclination (rad)

getDeltaT

public double getDeltaT()

Description copied from interface: GLONASSOrbitalElements

Get the correction to the mean value of Draconian period.

Specified by:

getDeltaT in interface GLONASSOrbitalElements

Returns:

the correction to the mean value of Draconian period (s)

getDeltaTDot

public double getDeltaTDot()

Description copied from interface: GLONASSOrbitalElements

Get the rate of change of Draconian period.

Specified by:

getDeltaTDot in interface GLONASSOrbitalElements

Returns:

the rate of change of Draconian period

getHealth

public int getHealth()

Get the Health status.

Returns:

the Health status

getFrequencyChannel

public int getFrequencyChannel()

Get the frequency channel.

Returns:

the frequency channel

getGlo2UTC

public double getGlo2UTC()

Get the correction from GLONASS to UTC.

Returns:

the correction from GLONASS to UTC (s)

getGPS2Glo

public double getGPS2Glo()

Get the correction to GPS time relative GLONASS.

Returns:

the to GPS time relative GLONASS (s)

getGloOffset

public double getGloOffset()

Get the correction of time relative to GLONASS system time.

Returns:

the correction of time relative to GLONASS system time (s)

getNa

public int getNa()

Description copied from interface: GLONASSOrbitalElements

Get the number of the current day in a four year interval.

Specified by:

getNa in interface GLONASSOrbitalElements

Returns:

the number of the current day in a four year interval

getN4

public int getN4()

Description copied from interface: GLONASSOrbitalElements

Get the number of the current four year interval.

Specified by:

getN4 in interface GLONASSOrbitalElements

Returns:

the number of the current four year interval