org.orekit.models.earth.troposphere

Interface DiscreteTroposphericModel

All Known Implementing Classes:

EstimatedTroposphericModel, FixedTroposphericDelay, MariniMurrayModel, MendesPavlisModel, SaastamoinenModel, TimeSpanEstimatedTroposphericModel, ViennaOneModel, ViennaThreeModel

public interface DiscreteTroposphericModel

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

Models that implement this interface split the delay into hydrostatic and non-hydrostatic part:

δ = δ_h + δ_nh

With:

• δ_h = hydrostatic delay
• δ_nh = non-hydrostatic (or wet) delay

Author:

Bryan Cazabonne

Method Summary

Modifier and Type	Method and Description
default double[]	getParameters() Get tropospheric model parameters.
default <T extends CalculusFieldElement<T>> T[]	getParameters(Field<T> field) Get tropospheric model parameters.
List<ParameterDriver>	getParametersDrivers() Get the drivers for tropospheric model parameters.
double	pathDelay(double elevation, GeodeticPoint point, double[] parameters, AbsoluteDate date) Calculates the tropospheric path delay for the signal path from a ground station to a satellite.
<T extends CalculusFieldElement<T>> T	pathDelay(T elevation, FieldGeodeticPoint<T> point, T[] parameters, FieldAbsoluteDate<T> date) Calculates the tropospheric path delay for the signal path from a ground station to a satellite.

Method Detail

pathDelay

double pathDelay(double elevation,
                 GeodeticPoint point,
                 double[] parameters,
                 AbsoluteDate date)

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

Parameters:

elevation - the elevation of the satellite, in radians

point - station location

parameters - tropospheric model parameters

date - current date

Returns:

the path delay due to the troposphere in m

pathDelay

<T extends CalculusFieldElement<T>> T pathDelay(T elevation,
                                                FieldGeodeticPoint<T> point,
                                                T[] parameters,
                                                FieldAbsoluteDate<T> date)

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

Type Parameters:

T - type of the elements

Parameters:

elevation - the elevation of the satellite, in radians

point - station location

parameters - tropospheric model parameters

date - current date

Returns:

the path delay due to the troposphere in m

getParametersDrivers

List<ParameterDriver> getParametersDrivers()

Get the drivers for tropospheric model parameters.

Returns:

drivers for tropospheric model parameters

getParameters

default double[] getParameters()

Get tropospheric model parameters.

Returns:

tropospheric model parameters

getParameters

default <T extends CalculusFieldElement<T>> T[] getParameters(Field<T> field)

Get tropospheric model parameters.

Type Parameters:

T - type of the elements

Parameters:

field - field to which the elements belong

Returns:

tropospheric model parameters