Package org.orekit.models.earth

Interface TroposphericModel

All Superinterfaces:

DiscreteTroposphericModel, MappingFunction, Serializable

All Known Implementing Classes:

FixedTroposphericDelay, MariniMurrayModel, SaastamoinenModel

public interface TroposphericModel
extends 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 don't split the delay into hydrostatic and non-hydrostatic part.

Since:

7.1

Author:

Thomas Neidhart

Method Summary

Modifier and Type	Method	Description
default double[]	computeZenithDelay(double height, double[] parameters, AbsoluteDate date)	This method allows the computation of the zenith hydrostatic and zenith wet delay.
default <T extends org.hipparchus.RealFieldElement<T>> T[]	computeZenithDelay(T height, T[] parameters, FieldAbsoluteDate<T> date)	This method allows the computation of the zenith hydrostatic and zenith wet delay.
default List<ParameterDriver>	getParametersDrivers()	Get the drivers for tropospheric model parameters.
default double[]	mappingFactors(double elevation, double height, double[] parameters, AbsoluteDate date)	This method allows the computation of the hydrostatic and wet mapping functions.
default <T extends org.hipparchus.RealFieldElement<T>> T[]	mappingFactors(T elevation, T height, T[] parameters, FieldAbsoluteDate<T> date)	This method allows the computation of the hydrostatic and wet mapping functions.
double	pathDelay(double elevation, double height)	Calculates the tropospheric path delay for the signal path from a ground station to a satellite.
default double	pathDelay(double elevation, double height, double[] parameters, AbsoluteDate date)	Calculates the tropospheric path delay for the signal path from a ground station to a satellite.
default <T extends org.hipparchus.RealFieldElement<T>> T	pathDelay(T elevation, T height)	Calculates the tropospheric path delay for the signal path from a ground station to a satellite.
default <T extends org.hipparchus.RealFieldElement<T>> T	pathDelay(T elevation, T height, T[] parameters, FieldAbsoluteDate<T> date)	Calculates the tropospheric path delay for the signal path from a ground station to a satellite.

Methods inherited from interface org.orekit.models.earth.MappingFunction

getParameters, getParameters

Method Detail

pathDelay

double pathDelay(double elevation,
                 double height)

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

height - the height of the station in m above sea level

Returns:

the path delay due to the troposphere in m

pathDelay

default <T extends org.hipparchus.RealFieldElement<T>> T pathDelay(T elevation,
                                                                   T height)

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

It is discourage to use this method. It has been developed to respect the current architecture of the tropospheric models.

Type Parameters:

T - type of the elements

Parameters:

elevation - the elevation of the satellite, in radians

height - the height of the station in m above sea level

Returns:

the path delay due to the troposphere in m

pathDelay

default double pathDelay(double elevation,
                         double height,
                         double[] parameters,
                         AbsoluteDate date)

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

Specified by:

pathDelay in interface DiscreteTroposphericModel

Parameters:

elevation - the elevation of the satellite, in radians

height - the height of the station in m above sea level

parameters - tropospheric model parameters.

date - current date

Returns:

the path delay due to the troposphere in m

pathDelay

default <T extends org.hipparchus.RealFieldElement<T>> T pathDelay(T elevation,
                                                                   T height,
                                                                   T[] parameters,
                                                                   FieldAbsoluteDate<T> date)

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

Specified by:

pathDelay in interface DiscreteTroposphericModel

Type Parameters:

T - type of the elements

Parameters:

elevation - the elevation of the satellite, in radians

height - the height of the station in m above sea level

parameters - tropospheric model parameters.

date - current date

Returns:

the path delay due to the troposphere in m

computeZenithDelay

default double[] computeZenithDelay(double height,
                                    double[] parameters,
                                    AbsoluteDate date)

This method allows the computation of the zenith hydrostatic and zenith wet delay. The resulting element is an array having the following form:

• double[0] = D_hz → zenith hydrostatic delay
• double[1] = D_wz → zenith wet delay

Specified by:

computeZenithDelay in interface DiscreteTroposphericModel

Parameters:

height - the height of the station in m above sea level.

parameters - tropospheric model parameters.

date - current date

Returns:

a two components array containing the zenith hydrostatic and wet delays.

computeZenithDelay

default <T extends org.hipparchus.RealFieldElement<T>> T[] computeZenithDelay(T height,
                                                                              T[] parameters,
                                                                              FieldAbsoluteDate<T> date)

This method allows the computation of the zenith hydrostatic and zenith wet delay. The resulting element is an array having the following form:

• double[0] = D_hz → zenith hydrostatic delay
• double[1] = D_wz → zenith wet delay

Specified by:

computeZenithDelay in interface DiscreteTroposphericModel

Type Parameters:

T - type of the elements

Parameters:

height - the height of the station in m above sea level.

parameters - tropospheric model parameters.

date - current date

Returns:

a two components array containing the zenith hydrostatic and wet delays.

mappingFactors

default double[] mappingFactors(double elevation,
                                double height,
                                double[] parameters,
                                AbsoluteDate date)

This method allows the computation of the hydrostatic and wet mapping functions. The resulting element is an array having the following form:

• double[0] = m_h(e) → hydrostatic mapping function
• double[1] = m_w(e) → wet mapping function

Specified by:

mappingFactors in interface MappingFunction

Parameters:

elevation - the elevation of the satellite, in radians.

height - the height of the station in m above sea level.

parameters - tropospheric model parameters.

date - current date

Returns:

a two components array containing the hydrostatic and wet mapping functions.

mappingFactors

default <T extends org.hipparchus.RealFieldElement<T>> T[] mappingFactors(T elevation,
                                                                          T height,
                                                                          T[] parameters,
                                                                          FieldAbsoluteDate<T> date)

This method allows the computation of the hydrostatic and wet mapping functions. The resulting element is an array having the following form:

• double[0] = m_h(e) → hydrostatic mapping function
• double[1] = m_w(e) → wet mapping function

Specified by:

mappingFactors in interface MappingFunction

Type Parameters:

T - type of the elements

Parameters:

elevation - the elevation of the satellite, in radians.

height - the height of the station in m above sea level.

parameters - tropospheric model parameters.

date - current date

Returns:

a two components array containing the hydrostatic and wet mapping functions.

getParametersDrivers

default List<ParameterDriver> getParametersDrivers()

Get the drivers for tropospheric model parameters.

Specified by:

getParametersDrivers in interface MappingFunction

Returns:

drivers for tropospheric model parameters