Package org.orekit.estimation.measurements.modifiers

Class BaseOneWayGNSSRangeIonosphericDelayModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.BaseOneWayGNSSRangeIonosphericDelayModifier

Direct Known Subclasses:

OneWayGNSSRangeIonosphericDelayModifier

public abstract class BaseOneWayGNSSRangeIonosphericDelayModifier
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	BaseOneWayGNSSRangeIonosphericDelayModifier(IonosphericModel model, double freq)	Constructor.

Method Summary

Modifier and Type	Method	Description
String	getEffectName()	Get the name of the effect modifying the measurement.
protected IonosphericModel	getIonoModel()	Get the ionospheric delay model.
List<ParameterDriver>	getParametersDrivers()	Get the drivers for this modifier parameters.
protected <T extends CalculusFieldElement<T>> T	oneWayGNSSErrorIonosphericModel(Observer observer, FieldSpacecraftState<T> state, T[] parameters)	Compute the measurement error due to Ionosphere.
protected double	oneWayGNSSErrorIonosphericModel(Observer observer, 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 Details

BaseOneWayGNSSRangeIonosphericDelayModifier

protected BaseOneWayGNSSRangeIonosphericDelayModifier(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 Details

getEffectName

public String getEffectName()

Get the name of the effect modifying the measurement.

Returns:

name of the effect modifying the measurement

Since:

13.0

getIonoModel

protected IonosphericModel getIonoModel()

Get the ionospheric delay model.

Returns:

ionospheric delay model

oneWayGNSSErrorIonosphericModel

protected double oneWayGNSSErrorIonosphericModel(Observer observer,
 SpacecraftState state)

Compute the measurement error due to Ionosphere.

Parameters:

observer - observing object

state - estimated spacecraft state

Returns:

the measurement error due to Ionosphere

oneWayGNSSErrorIonosphericModel

protected <T extends CalculusFieldElement<T>> T oneWayGNSSErrorIonosphericModel(Observer observer,
 FieldSpacecraftState<T> state,
 T[] parameters)

Compute the measurement error due to Ionosphere.

Type Parameters:

T - type of the elements

Parameters:

observer - observing object

state - estimated 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