org.orekit.gnss.attitude

Class BeidouMeo

java.lang.Object

org.orekit.gnss.attitude.BeidouMeo

All Implemented Interfaces:

AttitudeProvider, GNSSAttitudeProvider

Direct Known Subclasses:

BeidouIGSO

public class BeidouMeo
extends Object

Attitude providers for Beidou Medium Earth Orbit navigation satellites.

Since:

9.2

Author:

Luc Maisonobe Java translation

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected TimeStampedAngularCoordinates	correctedYaw(org.orekit.gnss.attitude.GNSSAttitudeContext context) Select the /** Compute GNSS attitude with midnight/noon yaw turn correction.
protected <T extends org.hipparchus.CalculusFieldElement<T>> TimeStampedFieldAngularCoordinates<T>	correctedYaw(org.orekit.gnss.attitude.GNSSFieldAttitudeContext<T> context) Compute GNSS attitude with midnight/noon yaw turn correction.
<T extends org.hipparchus.CalculusFieldElement<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.
protected Frame	getInertialFrame() Get inertial frame where velocity are computed.
protected ExtendedPVCoordinatesProvider	getSun() Get provider for Sun position.
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

Methods inherited from interface org.orekit.attitudes.AttitudeProvider

getAttitudeRotation, getAttitudeRotation

Constructor Detail

BeidouMeo

public BeidouMeo(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)

Select the /** 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

correctedYaw

protected <T extends org.hipparchus.CalculusFieldElement<T>> TimeStampedFieldAngularCoordinates<T> correctedYaw(org.orekit.gnss.attitude.GNSSFieldAttitudeContext<T> context)

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

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)

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 on the specified date and position-velocity state

getAttitude

public <T extends org.hipparchus.CalculusFieldElement<T>> FieldAttitude<T> getAttitude(FieldPVCoordinatesProvider<T> pvProv,
                                                                                       FieldAbsoluteDate<T> date,
                                                                                       Frame frame)

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 on the specified date and position-velocity state

getSun

protected ExtendedPVCoordinatesProvider getSun()

Get provider for Sun position.

Returns:

provider for Sun position

Since:

12.0

getInertialFrame

protected Frame getInertialFrame()

Get inertial frame where velocity are computed.

Returns:

inertial frame where velocity are computed