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

Class BeidouAlmanac

java.lang.Object

org.orekit.propagation.analytical.gnss.data.GNSSOrbitalElements<BeidouAlmanac>

org.orekit.propagation.analytical.gnss.data.BeidouAlmanac

All Implemented Interfaces:

OrbitalParameters, GNSSClockElements, TimeStamped

public class BeidouAlmanac
extends GNSSOrbitalElements<BeidouAlmanac>

Class for BeiDou almanac.

Since:

10.0

Author:

Bryan Cazabonne

See Also:

• "BeiDou Navigation Satellite System, Signal In Space, Interface Control Document, Version 2.1, Table 5-12"

Constructor Summary

Constructors

Constructor	Description
BeidouAlmanac(FieldBeidouAlmanac<T> original)	Constructor from field instance.
BeidouAlmanac(TimeScales timeScales, int prn, GNSSDate toe, KeplerianOrbit orbit, double aDot, double deltaN0, double deltaN0Dot, double iDot, double omegaDot, double cuc, double cus, double crc, double crs, double cic, double cis, double af0, double af1, double af2, double tgd, GNSSDate toc, int health)	Build a new almanac.

Method Summary

Modifier and Type	Method	Description
BeidouAlmanacFactory	baseFactory(Frame inertial, Frame bodyFixed)	Factory for the orbital elements.
int	getHealth()	Get the Health status.
<T extends CalculusFieldElement<T>> FieldBeidouAlmanac<T>	toField(FieldKeplerianOrbit<T> orbit, T[] nonKeplerian, DoubleFunction<T> converter)	Create another field version of the instance.

Methods inherited from class org.orekit.propagation.analytical.gnss.data.GNSSOrbitalElements

factory, getADot, getAf0, getAf1, getAf2, getAngularVelocity, getCic, getCis, getCrc, getCrs, getCuc, getCus, getCycleDuration, getDate, getDeltaN0, getDeltaN0Dot, getIDot, getOmegaDot, getOrbit, getPrn, getTgd, getTimeOfClock, getTimeOfEphemeris, getTimeScales, getType, getWeeksInCycle, isCivilianMessage, toField

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.time.TimeStamped

durationFrom

Constructor Details

BeidouAlmanac

public BeidouAlmanac(TimeScales timeScales,
 int prn,
 GNSSDate toe,
 KeplerianOrbit orbit,
 double aDot,
 double deltaN0,
 double deltaN0Dot,
 double iDot,
 double omegaDot,
 double cuc,
 double cus,
 double crc,
 double crs,
 double cic,
 double cis,
 double af0,
 double af1,
 double af2,
 double tgd,
 GNSSDate toc,
 int health)

Build a new almanac.

Parameters:

timeScales - known time scales

prn - PRN number of the satellite

toe - time of ephemeris (must be consistent with orbit)

orbit - Keplerian orbit in Earth-frozen frame

aDot - change rate in semi-major axis (m/s)

deltaN0 - delta of satellite mean motion

deltaN0Dot - change rate in Δn₀

iDot - inclination rate (rad/s)

omegaDot - rate of right ascension (rad/s)

cuc - amplitude of the cosine harmonic correction term to the argument of latitude

cus - amplitude of the sine harmonic correction term to the argument of latitude

crc - amplitude of the cosine harmonic correction term to the orbit radius

crs - amplitude of the sine harmonic correction term to the orbit radius

cic - amplitude of the cosine harmonic correction term to the inclination

cis - amplitude of the sine harmonic correction term to the inclination

af0 - zero-th order clock correction (s)

af1 - first order clock correction (s/s)

af2 - second order clock correction (s/s²)

tgd - group delay differential TGD for L1-L2 correction

toc - time of clock

health - health status

BeidouAlmanac

public BeidouAlmanac(FieldBeidouAlmanac<T> original)

Constructor from field instance.

Type Parameters:

T - type of the field elements

Parameters:

original - regular field instance

Method Details

toField

public <T extends CalculusFieldElement<T>>
FieldBeidouAlmanac<T> toField(FieldKeplerianOrbit<T> orbit,
 T[] nonKeplerian,
 DoubleFunction<T> converter)

Create another field version of the instance.

Specified by:

toField in class GNSSOrbitalElements<BeidouAlmanac>

Type Parameters:

T - type of the field elements

Parameters:

orbit - orbit in the correct gradient field

nonKeplerian - non-Keplerian parameters

converter - converter for remaining elements

Returns:

gradient version of the instance

getHealth

public int getHealth()

Get the Health status.

Returns:

the Health status

baseFactory

public BeidouAlmanacFactory baseFactory(Frame inertial,
 Frame bodyFixed)

Factory for the orbital elements.

Specified by:

baseFactory in class GNSSOrbitalElements<BeidouAlmanac>

Parameters:

inertial - reference inertial frame

bodyFixed - body fixed frame (will be frozen at date to build the orbital elements

Returns:

factory for the orbital elements