Package org.orekit.estimation.measurements.modifiers

Class RangeRateIonosphericDelayModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.BaseRangeRateIonosphericDelayModifier

org.orekit.estimation.measurements.modifiers.RangeRateIonosphericDelayModifier

All Implemented Interfaces:

EstimationModifier<RangeRate>, ParameterDriversProvider

public class RangeRateIonosphericDelayModifier
extends BaseRangeRateIonosphericDelayModifier
implements EstimationModifier<RangeRate>

Class modifying theoretical range-rate measurement with ionospheric delay.

The effect of ionospheric correction on the range-rate is directly computed through the computation of the ionospheric delay difference with respect to time.

The ionospheric delay depends on the frequency of the signal (GNSS, VLBI, ...). For optical measurements (e.g. SLR), the ray is not affected by ionosphere charged particles.

Since 10.0, state derivatives and ionospheric parameters derivates are computed using automatic differentiation.

Since:

8.0

Author:

Joris Olympio

Constructor Summary

Constructors

Constructor	Description
RangeRateIonosphericDelayModifier(IonosphericModel model, double freq, boolean twoWay)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	modify(EstimatedMeasurement<RangeRate> estimated)	Apply a modifier to an estimated measurement.
void	modifyWithoutDerivatives(EstimatedMeasurementBase<RangeRate> estimated)	Apply a modifier to an estimated measurement without derivatives.
protected <T extends CalculusFieldElement<T>> T	rangeRateErrorIonosphericModel(GroundStation station, FieldSpacecraftState<T> state, T[] parameters)	Compute the measurement error due to Ionosphere.
protected double	rangeRateErrorIonosphericModel(GroundStation station, SpacecraftState state)	Compute the measurement error due to Ionosphere.

Methods inherited from class org.orekit.estimation.measurements.modifiers.BaseRangeRateIonosphericDelayModifier

getIonoModel, getParametersDrivers

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, getParametersDrivers, isSupported

Constructor Detail

RangeRateIonosphericDelayModifier

public RangeRateIonosphericDelayModifier(IonosphericModel model,
                                         double freq,
                                         boolean twoWay)

Constructor.

Parameters:

model - Ionospheric delay model appropriate for the current range-rate measurement method.

freq - frequency of the signal in Hz

twoWay - Flag indicating whether the measurement is two-way.

Method Detail

rangeRateErrorIonosphericModel

protected double rangeRateErrorIonosphericModel(GroundStation station,
                                                SpacecraftState state)

Compute the measurement error due to Ionosphere.

Overrides:

rangeRateErrorIonosphericModel in class BaseRangeRateIonosphericDelayModifier

Parameters:

station - station

state - spacecraft state

Returns:

the measurement error due to Ionosphere

rangeRateErrorIonosphericModel

protected <T extends CalculusFieldElement<T>> T rangeRateErrorIonosphericModel(GroundStation station,
                                                                               FieldSpacecraftState<T> state,
                                                                               T[] parameters)

Compute the measurement error due to Ionosphere.

Overrides:

rangeRateErrorIonosphericModel in class BaseRangeRateIonosphericDelayModifier

Type Parameters:

T - type of the elements

Parameters:

station - station

state - spacecraft state

parameters - ionospheric model parameters

Returns:

the measurement error due to Ionosphere

modifyWithoutDerivatives

public void modifyWithoutDerivatives(EstimatedMeasurementBase<RangeRate> estimated)

Apply a modifier to an estimated measurement without derivatives.

Specified by:

modifyWithoutDerivatives in interface EstimationModifier<RangeRate>

Parameters:

estimated - estimated measurement to modify

modify

public void modify(EstimatedMeasurement<RangeRate> estimated)

Apply a modifier to an estimated measurement.

Specified by:

modify in interface EstimationModifier<RangeRate>

Parameters:

estimated - estimated measurement to modify