Package org.orekit.models.earth.ionosphere

Interface IonosphericDelayModel

All Superinterfaces:

ParameterDriversProvider

All Known Implementing Classes:

EstimatedIonosphericModel, GlobalIonosphereMapModel, KlobucharIonoModel, NeQuickGalileo, NeQuickItu, NeQuickModel, SsrVtecIonosphericModel

public interface IonosphericDelayModel
extends ParameterDriversProvider

Defines a ionospheric model, used to calculate the path delay imposed to electro-magnetic signals between an orbital satellite and a ground station.

Since 10.0, this interface can be used for models that aspire to estimate ionospheric parameters.

Since:

13.0.3

Author:

Joris Olympio, Bryan Cazabonne, Luc Maisonobe

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> T	pathDelay(FieldSpacecraftState<T> state, TopocentricFrame baseFrame, FieldAbsoluteDate<T> receptionDate, double frequency, T[] parameters)	Calculates the ionospheric path delay for the signal path from a ground station to a satellite.
double	pathDelay(SpacecraftState state, TopocentricFrame baseFrame, AbsoluteDate receptionDate, double frequency, double[] parameters)	Calculates the ionospheric path delay for the signal path from a ground station to a satellite.

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

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

Method Detail

pathDelay

double pathDelay(SpacecraftState state,
                 TopocentricFrame baseFrame,
                 AbsoluteDate receptionDate,
                 double frequency,
                 double[] parameters)

Calculates the ionospheric path delay for the signal path from a ground station to a satellite.

This method is intended to be used for orbit determination issues. In that respect, if the elevation is below 0° the path delay will be equal to zero.

For individual use of the ionospheric model (i.e. not for orbit determination), another method signature can be implemented to compute the path delay for any elevation angle.

Parameters:

state - spacecraft state

baseFrame - base frame associated with the station

receptionDate - date at signal reception

frequency - frequency of the signal in Hz

parameters - ionospheric model parameters at state date

Returns:

the path delay due to the ionosphere in m

pathDelay

<T extends CalculusFieldElement<T>> T pathDelay(FieldSpacecraftState<T> state,
                                                TopocentricFrame baseFrame,
                                                FieldAbsoluteDate<T> receptionDate,
                                                double frequency,
                                                T[] parameters)

Calculates the ionospheric path delay for the signal path from a ground station to a satellite.

This method is intended to be used for orbit determination issues. In that respect, if the elevation is below 0° the path delay will be equal to zero.

For individual use of the ionospheric model (i.e. not for orbit determination), another method signature can be implemented to compute the path delay for any elevation angle.

Type Parameters:

T - type of the elements

Parameters:

state - spacecraft state

baseFrame - base frame associated with the station

receptionDate - date at signal reception

frequency - frequency of the signal in Hz

parameters - ionospheric model parameters at state date

Returns:

the path delay due to the ionosphere in m