org.orekit.models.earth
Class FixedDelayModel

java.lang.Object
  org.orekit.models.earth.FixedDelayModel

All Implemented Interfaces:

Serializable, TroposphericCorrection

public class FixedDelayModel
extends Object
implements TroposphericCorrection

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

See Also:

Serialized Form

Constructor Summary

FixedDelayModel(double[] xArr, double[] yArr, double[][] fArr, double height)
Creates a new FixedDelayModel instance.

FixedDelayModel(String supportedName, double height)
Creates a new FixedDelayModel instance, and loads the delay values from the given resource via the DataProvidersManager.

Method Summary

double	computePathDelay(double elevation) Calculates the tropospheric path delay for the signal path from a ground station to a satellite.
double	computeSignalDelay(double elevation) Calculates the tropospheric signal delay for the signal path from a ground station to a satellite.
static FixedDelayModel	getDefaultModel(double height) Returns the default model, loading delay values from the file "tropospheric-delay.txt".

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedDelayModel

public FixedDelayModel(double[] xArr,
                       double[] yArr,
                       double[][] fArr,
                       double height)

Creates a new FixedDelayModel instance.

Parameters:

xArr - abscissa grid for the interpolation function

yArr - ordinate grid for the interpolation function

fArr - values samples for the interpolation function

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

FixedDelayModel

public FixedDelayModel(String supportedName,
                       double height)
                throws OrekitException

Creates a new FixedDelayModel instance, and loads the delay values from the given resource via the DataProvidersManager.

Parameters:

supportedName - a regular expression for supported resource names

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

Throws:

OrekitException - if the resource could not be loaded

Method Detail

getDefaultModel

public static FixedDelayModel getDefaultModel(double height)
                                       throws OrekitException

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

Parameters:

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

Returns:

the default model

Throws:

OrekitException - if the file could not be loaded

computePathDelay

public double computePathDelay(double elevation)

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

Parameters:

elevation - the elevation of the satellite [rad]

Returns:

the path delay due to the troposphere [m]

computeSignalDelay

public double computeSignalDelay(double elevation)

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

Specified by:

computeSignalDelay in interface TroposphericCorrection

Parameters:

elevation - the elevation of the satellite [rad]

Returns:

the signal delay due to the troposphere [s]