org.orekit.estimation.measurements.modifiers

Class AberrationModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.AberrationModifier

All Implemented Interfaces:

EstimationModifier<AngularRaDec>, ParameterDriversProvider

public class AberrationModifier
extends Object
implements EstimationModifier<AngularRaDec>

Class modifying theoretical angular measurement with (the inverse of) stellar aberration.

This class implements equation 3.252-3 from Seidelmann, "Explanatory Supplement to the Astronmical Almanac", 1992.

Author:

Mark Rutten

Constructor Summary

Constructors

Constructor and Description
AberrationModifier() Empty constructor.
AberrationModifier(DataContext dataContext) Constructor.

Method Summary

Modifier and Type	Method and Description
static org.hipparchus.analysis.differentiation.Gradient[]	fieldNaturalToProper(org.hipparchus.analysis.differentiation.Gradient[] naturalRaDec, FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial, Frame frame) Natural to proper correction for aberration of light.
static org.hipparchus.analysis.differentiation.Gradient[]	fieldNaturalToProper(org.hipparchus.analysis.differentiation.Gradient[] naturalRaDec, FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial, Frame frame, DataContext context) Natural to proper correction for aberration of light.
static org.hipparchus.analysis.differentiation.Gradient[]	fieldProperToNatural(org.hipparchus.analysis.differentiation.Gradient[] properRaDec, FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial, Frame frame) Proper to natural correction for aberration of light.
static org.hipparchus.analysis.differentiation.Gradient[]	fieldProperToNatural(org.hipparchus.analysis.differentiation.Gradient[] properRaDec, FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial, Frame frame, DataContext context) Proper to natural correction for aberration of light.
List<ParameterDriver>	getParametersDrivers() Get the drivers for parameters.
void	modify(EstimatedMeasurement<AngularRaDec> estimated) Apply a modifier to an estimated measurement.
void	modifyWithoutDerivatives(EstimatedMeasurementBase<AngularRaDec> estimated) Apply a modifier to an estimated measurement without derivatives.
static double[]	naturalToProper(double[] naturalRaDec, GroundStation station, AbsoluteDate date, Frame frame) Natural to proper correction for aberration of light.
static double[]	naturalToProper(double[] naturalRaDec, GroundStation station, AbsoluteDate date, Frame frame, DataContext context) Natural to proper correction for aberration of light.
static double[]	properToNatural(double[] properRaDec, GroundStation station, AbsoluteDate date, Frame frame) Proper to natural correction for aberration of light.
static double[]	properToNatural(double[] properRaDec, GroundStation station, AbsoluteDate date, Frame frame, DataContext context) Proper to natural correction for aberration of light.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported

Constructor Detail

AberrationModifier

@DefaultDataContext
public AberrationModifier()

Empty constructor.

This constructor uses the default data context

Since:

12.0

See Also:

AberrationModifier(DataContext)

AberrationModifier

public AberrationModifier(DataContext dataContext)

Constructor.

Parameters:

dataContext - data context

Since:

12.0.1

Method Detail

naturalToProper

@DefaultDataContext
public static double[] naturalToProper(double[] naturalRaDec,
                                                           GroundStation station,
                                                           AbsoluteDate date,
                                                           Frame frame)

Natural to proper correction for aberration of light.

Parameters:

naturalRaDec - the "natural" direction (in barycentric coordinates)

station - the observer ground station

date - the date of the measurement

frame - the frame of the measurement

Returns:

the "proper" direction (station-relative coordinates)

naturalToProper

public static double[] naturalToProper(double[] naturalRaDec,
                                       GroundStation station,
                                       AbsoluteDate date,
                                       Frame frame,
                                       DataContext context)

Natural to proper correction for aberration of light.

Parameters:

naturalRaDec - the "natural" direction (in barycentric coordinates)

station - the observer ground station

date - the date of the measurement

frame - the frame of the measurement

context - the data context

Returns:

the "proper" direction (station-relative coordinates)

Since:

12.0.1

properToNatural

@DefaultDataContext
public static double[] properToNatural(double[] properRaDec,
                                                           GroundStation station,
                                                           AbsoluteDate date,
                                                           Frame frame)

Proper to natural correction for aberration of light.

Parameters:

properRaDec - the "proper" direction (station-relative coordinates)

station - the observer ground station

date - the date of the measurement

frame - the frame of the measurement

Returns:

the "natural" direction (in barycentric coordinates)

properToNatural

public static double[] properToNatural(double[] properRaDec,
                                       GroundStation station,
                                       AbsoluteDate date,
                                       Frame frame,
                                       DataContext context)

Proper to natural correction for aberration of light.

Parameters:

properRaDec - the "proper" direction (station-relative coordinates)

station - the observer ground station

date - the date of the measurement

frame - the frame of the measurement

context - the data context

Returns:

the "natural" direction (in barycentric coordinates)

Since:

12.0.1

fieldNaturalToProper

@DefaultDataContext
public static org.hipparchus.analysis.differentiation.Gradient[] fieldNaturalToProper(org.hipparchus.analysis.differentiation.Gradient[] naturalRaDec,
                                                                                                          FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial,
                                                                                                          Frame frame)

Natural to proper correction for aberration of light.

Parameters:

naturalRaDec - the "natural" direction (in barycentric coordinates)

stationToInertial - the transform from station to inertial coordinates

frame - the frame of the measurement

Returns:

the "proper" direction (station-relative coordinates)

fieldNaturalToProper

public static org.hipparchus.analysis.differentiation.Gradient[] fieldNaturalToProper(org.hipparchus.analysis.differentiation.Gradient[] naturalRaDec,
                                                                                      FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial,
                                                                                      Frame frame,
                                                                                      DataContext context)

Natural to proper correction for aberration of light.

Parameters:

naturalRaDec - the "natural" direction (in barycentric coordinates)

stationToInertial - the transform from station to inertial coordinates

frame - the frame of the measurement

context - the data context

Returns:

the "proper" direction (station-relative coordinates)

Since:

12.0.1

fieldProperToNatural

@DefaultDataContext
public static org.hipparchus.analysis.differentiation.Gradient[] fieldProperToNatural(org.hipparchus.analysis.differentiation.Gradient[] properRaDec,
                                                                                                          FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial,
                                                                                                          Frame frame)

Proper to natural correction for aberration of light.

Parameters:

properRaDec - the "proper" direction (station-relative coordinates)

stationToInertial - the transform from station to inertial coordinates

frame - the frame of the measurement

Returns:

the "natural" direction (in barycentric coordinates)

fieldProperToNatural

public static org.hipparchus.analysis.differentiation.Gradient[] fieldProperToNatural(org.hipparchus.analysis.differentiation.Gradient[] properRaDec,
                                                                                      FieldTransform<org.hipparchus.analysis.differentiation.Gradient> stationToInertial,
                                                                                      Frame frame,
                                                                                      DataContext context)

Proper to natural correction for aberration of light.

Parameters:

properRaDec - the "proper" direction (station-relative coordinates)

stationToInertial - the transform from station to inertial coordinates

frame - the frame of the measurement

context - the data context

Returns:

the "natural" direction (in barycentric coordinates)

Since:

12.0.1

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for parameters.

Specified by:

getParametersDrivers in interface ParameterDriversProvider

Returns:

drivers for parameters

modifyWithoutDerivatives

public void modifyWithoutDerivatives(EstimatedMeasurementBase<AngularRaDec> estimated)

Apply a modifier to an estimated measurement without derivatives.

Specified by:

modifyWithoutDerivatives in interface EstimationModifier<AngularRaDec>

Parameters:

estimated - estimated measurement to modify

modify

public void modify(EstimatedMeasurement<AngularRaDec> estimated)

Apply a modifier to an estimated measurement.

Specified by:

modify in interface EstimationModifier<AngularRaDec>

Parameters:

estimated - estimated measurement to modify