Package org.orekit.gnss.attitude

Class AbstractGNSSAttitudeProvider

java.lang.Object

org.orekit.gnss.attitude.AbstractGNSSAttitudeProvider

All Implemented Interfaces:

Serializable, AttitudeProvider, GNSSAttitudeProvider

Direct Known Subclasses:

BeidouGeo, BeidouIGSO, BeidouMeo, Galileo, GenericGNSS, Glonass, GPSBlockIIA, GPSBlockIIF, GPSBlockIIR

public abstract class AbstractGNSSAttitudeProvider
extends Object
implements GNSSAttitudeProvider

Base class for attitude providers for navigation satellites.

Since:

9.2

Author:

Luc Maisonobe

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractGNSSAttitudeProvider(AbsoluteDate validityStart, AbsoluteDate validityEnd, ExtendedPVCoordinatesProvider sun, Frame inertialFrame)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
protected abstract TimeStampedAngularCoordinates	correctedYaw(org.orekit.gnss.attitude.GNSSAttitudeContext context)	Compute GNSS attitude with midnight/noon yaw turn correction.
protected abstract <T extends RealFieldElement<T>> TimeStampedFieldAngularCoordinates<T>	correctedYaw(org.orekit.gnss.attitude.GNSSFieldAttitudeContext<T> context)	Compute GNSS attitude with midnight/noon yaw turn correction.
<T extends RealFieldElement<T>> FieldAttitude<T>	getAttitude(FieldPVCoordinatesProvider<T> pvProv, FieldAbsoluteDate<T> date, Frame frame)	Compute the attitude corresponding to an orbital state.
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame)	Compute the attitude corresponding to an orbital state.
AbsoluteDate	validityEnd()	Get end of validity for this provider.
AbsoluteDate	validityStart()	Get start of validity for this provider.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractGNSSAttitudeProvider

protected AbstractGNSSAttitudeProvider(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

validityStart

public AbsoluteDate validityStart()

Get start of validity for this provider.

Specified by:

validityStart in interface GNSSAttitudeProvider

Returns:

start of validity for this provider

validityEnd

public AbsoluteDate validityEnd()

Get end of validity for this provider.

Specified by:

validityEnd in interface GNSSAttitudeProvider

Returns:

end of validity for this provider

getAttitude

public Attitude getAttitude(PVCoordinatesProvider pvProv,
                            AbsoluteDate date,
                            Frame frame)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

getAttitude

public <T extends RealFieldElement<T>> FieldAttitude<T> getAttitude(FieldPVCoordinatesProvider<T> pvProv,
                                                                    FieldAbsoluteDate<T> date,
                                                                    Frame frame)
                                                             throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Type Parameters:

T - type of the field elements

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

correctedYaw

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

Compute GNSS attitude with midnight/noon yaw turn correction.

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 abstract <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.

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