Package org.orekit.estimation.measurements.modifiers

Class BaseRangeIonosphericDelayModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.BaseRangeIonosphericDelayModifier

Direct Known Subclasses:

BistaticRangeIonosphericDelayModifier, RangeIonosphericDelayModifier

public abstract class BaseRangeIonosphericDelayModifier
extends Object

Base class modifying theoretical range measurement with ionospheric delay. The effect of ionospheric correction on the range is directly computed through the computation of the ionospheric delay. 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:

11.2

Author:

Joris Olympio

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseRangeIonosphericDelayModifier(IonosphericModel model, double freq)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected IonosphericModel	getIonoModel()	Get the ionospheric delay model.
List<ParameterDriver>	getParametersDrivers()	Get the drivers for this modifier parameters.
protected <T extends CalculusFieldElement<T>> T	rangeErrorIonosphericModel(GroundStation station, FieldSpacecraftState<T> state, T[] parameters)	Compute the measurement error due to Ionosphere.
protected double	rangeErrorIonosphericModel(GroundStation station, SpacecraftState state)	Compute the measurement error due to Ionosphere.

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseRangeIonosphericDelayModifier

protected BaseRangeIonosphericDelayModifier(IonosphericModel model,
                                            double freq)

Constructor.

Parameters:

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

freq - frequency of the signal in Hz

Method Detail

getIonoModel

protected IonosphericModel getIonoModel()

Get the ionospheric delay model.

Returns:

ionospheric delay model

rangeErrorIonosphericModel

protected double rangeErrorIonosphericModel(GroundStation station,
                                            SpacecraftState state)

Compute the measurement error due to Ionosphere.

Parameters:

station - station

state - spacecraft state

Returns:

the measurement error due to Ionosphere

rangeErrorIonosphericModel

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

Compute the measurement error due to Ionosphere.

Type Parameters:

T - type of the elements

Parameters:

station - station

state - spacecraft state

parameters - ionospheric model parameters

Returns:

the measurement error due to Ionosphere

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for this modifier parameters.

Returns:

drivers for this modifier parameters