org.orekit.estimation.measurements

Class Angular

java.lang.Object

org.orekit.estimation.measurements.AbstractMeasurement<Angular>

org.orekit.estimation.measurements.Angular

All Implemented Interfaces:

ObservedMeasurement<Angular>, TimeStamped

public class Angular
extends AbstractMeasurement<Angular>

Class modeling an Azimuth-Elevation measurement from a ground station. The motion of the spacecraft during the signal flight time is taken into account. The date of the measurement corresponds to the reception on ground of the reflected signal.

Since:

8.0

Author:

Thierry Ceolin

Constructor Summary

Constructors

Constructor and Description
Angular(GroundStation station, AbsoluteDate date, double[] angular, double[] sigma, double[] baseWeight) Simple constructor.

Method Summary

Modifier and Type	Method and Description
GroundStation	getStation() Get the ground station from which measurement is performed.
protected EstimatedMeasurement<Angular>	theoreticalEvaluation(int iteration, int evaluation, SpacecraftState state) Estimate the theoretical value.

Methods inherited from class org.orekit.estimation.measurements.AbstractMeasurement

addModifier, estimate, getBaseWeight, getDate, getDimension, getModifiers, getObservedValue, getParametersDrivers, getTheoreticalStandardDeviation, isEnabled, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

Angular

public Angular(GroundStation station,
               AbsoluteDate date,
               double[] angular,
               double[] sigma,
               double[] baseWeight)
        throws OrekitException

Simple constructor.

Parameters:

station - ground station from which measurement is performed

date - date of the measurement

angular - observed value

sigma - theoretical standard deviation

baseWeight - base weight

Throws:

OrekitException - if a ParameterDriver name conflict occurs

Method Detail

getStation

public GroundStation getStation()

Get the ground station from which measurement is performed.

Returns:

ground station from which measurement is performed

theoreticalEvaluation

protected EstimatedMeasurement<Angular> theoreticalEvaluation(int iteration,
                                                              int evaluation,
                                                              SpacecraftState state)
                                                       throws OrekitException

Estimate the theoretical value.

The theoretical value does not have any modifiers applied.

Specified by:

theoreticalEvaluation in class AbstractMeasurement<Angular>

Parameters:

iteration - iteration number

evaluation - evaluation number

state - orbital state at measurement date

Returns:

theoretical value

Throws:

OrekitException - if value cannot be computed

See Also:

AbstractMeasurement.estimate(int, int, SpacecraftState)