org.orekit.models.earth.troposphere

Class FixedTroposphericDelay

java.lang.Object

org.orekit.models.earth.troposphere.FixedTroposphericDelay

All Implemented Interfaces:

DiscreteTroposphericModel

public class FixedTroposphericDelay
extends Object
implements DiscreteTroposphericModel

A static tropospheric model that interpolates the actual tropospheric delay based on values read from a configuration file (tropospheric-delay.txt) via the DataProvidersManager.

Author:

Thomas Neidhart

Constructor Summary

Constructors

Constructor and Description
FixedTroposphericDelay(double[] xArr, double[] yArr, double[][] fArr) Creates a new FixedTroposphericDelay instance.
FixedTroposphericDelay(String supportedName) Creates a new FixedTroposphericDelay instance, and loads the delay values from the given resource via the default data context.
FixedTroposphericDelay(String supportedName, DataProvidersManager dataProvidersManager) Creates a new FixedTroposphericDelay instance, and loads the delay values from the given resource via the specified data manager.

Method Summary

Modifier and Type	Method and Description
static FixedTroposphericDelay	getDefaultModel() Returns the default model, loading delay values from the file "tropospheric-delay.txt" via the default data context.
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.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.models.earth.troposphere.DiscreteTroposphericModel

getParameters, getParameters

Constructor Detail

FixedTroposphericDelay

public FixedTroposphericDelay(double[] xArr,
                              double[] yArr,
                              double[][] fArr)

Creates a new FixedTroposphericDelay instance.

Parameters:

xArr - abscissa grid for the interpolation function

yArr - ordinate grid for the interpolation function

fArr - values samples for the interpolation function

FixedTroposphericDelay

@DefaultDataContext
public FixedTroposphericDelay(String supportedName)

Creates a new FixedTroposphericDelay instance, and loads the delay values from the given resource via the default data context.

Parameters:

supportedName - a regular expression for supported resource names

See Also:

FixedTroposphericDelay(String, DataProvidersManager)

FixedTroposphericDelay

public FixedTroposphericDelay(String supportedName,
                              DataProvidersManager dataProvidersManager)

Creates a new FixedTroposphericDelay instance, and loads the delay values from the given resource via the specified data manager.

Parameters:

supportedName - a regular expression for supported resource names

dataProvidersManager - provides access to auxiliary data.

Since:

10.1

Method Detail

getDefaultModel

@DefaultDataContext
public static FixedTroposphericDelay getDefaultModel()

Returns the default model, loading delay values from the file "tropospheric-delay.txt" via the default data context.

This method uses the default data context.

Returns:

the default model

pathDelay

public 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.

Specified by:

pathDelay in interface DiscreteTroposphericModel

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

public <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.

Specified by:

pathDelay in interface DiscreteTroposphericModel

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

public List<ParameterDriver> getParametersDrivers()

Get the drivers for tropospheric model parameters.

Specified by:

getParametersDrivers in interface DiscreteTroposphericModel

Returns:

drivers for tropospheric model parameters