Package org.orekit.gnss.attitude

Class Glonass

java.lang.Object

org.orekit.gnss.attitude.AbstractGNSSAttitudeProvider

org.orekit.gnss.attitude.Glonass

All Implemented Interfaces:

Serializable, AttitudeProvider, GNSSAttitudeProvider

public class Glonass
extends AbstractGNSSAttitudeProvider

Attitude providers for Glonass navigation satellites.

This class is based on the May 2017 version of J. Kouba eclips.f subroutine available at IGS Analysis Center Coordinator site. The eclips.f code itself is not used ; its hard-coded data are used and its low level models are used, but the structure of the code and the API have been completely rewritten.

WARNING: as of release 9.2, this feature is still considered experimental

Since:

9.2

Author:

J. Kouba original fortran routine, Luc Maisonobe Java translation

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
Glonass(AbsoluteDate validityStart, AbsoluteDate validityEnd, ExtendedPVCoordinatesProvider sun, Frame inertialFrame)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
protected TimeStampedAngularCoordinates	correctedYaw(org.orekit.gnss.attitude.GNSSAttitudeContext context)	Compute GNSS attitude with midnight/noon yaw turn correction.
protected <T extends RealFieldElement<T>> TimeStampedFieldAngularCoordinates<T>	correctedYaw(org.orekit.gnss.attitude.GNSSFieldAttitudeContext<T> context)	Compute GNSS attitude with midnight/noon yaw turn correction.

Methods inherited from class org.orekit.gnss.attitude.AbstractGNSSAttitudeProvider

getAttitude, getAttitude, validityEnd, validityStart

Methods inherited from class java.lang.Object

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

Constructor Detail

Glonass

public Glonass(AbsoluteDate validityStart,
               AbsoluteDate validityEnd,
               ExtendedPVCoordinatesProvider sun,
               Frame inertialFrame)

Simple constructor.

Parameters:

validityStart - start of validity for this provider

validityEnd - end of validity for this provider

sun - provider for Sun position

inertialFrame - inertial frame where velocity are computed

Method Detail

correctedYaw

protected TimeStampedAngularCoordinates correctedYaw(org.orekit.gnss.attitude.GNSSAttitudeContext context)
                                              throws OrekitException

Compute GNSS attitude with midnight/noon yaw turn correction.

Specified by:

correctedYaw in class AbstractGNSSAttitudeProvider

Parameters:

context - context data for attitude computation

Returns:

corrected yaw, using inertial frame as the reference

Throws:

OrekitException - if yaw corrected attitude cannot be computed

correctedYaw

protected <T extends RealFieldElement<T>> TimeStampedFieldAngularCoordinates<T> correctedYaw(org.orekit.gnss.attitude.GNSSFieldAttitudeContext<T> context)
                                                                                      throws OrekitException

Compute GNSS attitude with midnight/noon yaw turn correction.

Specified by:

correctedYaw in class AbstractGNSSAttitudeProvider

Type Parameters:

T - type of the field elements

Parameters:

context - context data for attitude computation

Returns:

corrected yaw, using inertial frame as the reference

Throws:

OrekitException - if yaw corrected attitude cannot be computed