org.orekit.models.earth.troposphere

Class TroposphericModelUtils

java.lang.Object

org.orekit.models.earth.troposphere.TroposphericModelUtils

public class TroposphericModelUtils
extends Object

Utility class for tropospheric models.

Since:

11.0

Author:

Bryan Cazabonne

Method Summary

Modifier and Type	Method and Description
static double	computeHeightCorrection(double elevation, double height) This method computes the height correction for the hydrostatic component of the mapping function.
static <T extends CalculusFieldElement<T>> T	computeHeightCorrection(T elevation, T height, Field<T> field) This method computes the height correction for the hydrostatic component of the mapping function.
static double	mappingFunction(double a, double b, double c, double elevation) Compute the mapping function related to the coefficient values and the elevation.
static <T extends CalculusFieldElement<T>> T	mappingFunction(T a, T b, T c, T elevation) Compute the mapping function related to the coefficient values and the elevation.

Methods inherited from class java.lang.Object

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

Method Detail

mappingFunction

public static double mappingFunction(double a,
                                     double b,
                                     double c,
                                     double elevation)

Compute the mapping function related to the coefficient values and the elevation.

Parameters:

a - a coefficient

b - b coefficient

c - c coefficient

elevation - the elevation of the satellite, in radians.

Returns:

the value of the function at a given elevation

mappingFunction

public static <T extends CalculusFieldElement<T>> T mappingFunction(T a,
                                                                    T b,
                                                                    T c,
                                                                    T elevation)

Compute the mapping function related to the coefficient values and the elevation.

Type Parameters:

T - type of the elements

Parameters:

a - a coefficient

b - b coefficient

c - c coefficient

elevation - the elevation of the satellite, in radians.

Returns:

the value of the function at a given elevation

computeHeightCorrection

public static double computeHeightCorrection(double elevation,
                                             double height)

This method computes the height correction for the hydrostatic component of the mapping function. The formulas are given by Neill's paper, 1996:

Niell A. E. (1996) "Global mapping functions for the atmosphere delay of radio wavelengths,” J. Geophys. Res., 101(B2), pp. 3227–3246, doi: 10.1029/95JB03048.

Parameters:

elevation - the elevation of the satellite, in radians.

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

Returns:

the height correction, in m

computeHeightCorrection

public static <T extends CalculusFieldElement<T>> T computeHeightCorrection(T elevation,
                                                                            T height,
                                                                            Field<T> field)

This method computes the height correction for the hydrostatic component of the mapping function. The formulas are given by Neill's paper, 1996:

Niell A. E. (1996) "Global mapping functions for the atmosphere delay of radio wavelengths,” J. Geophys. Res., 101(B2), pp. 3227–3246, doi: 10.1029/95JB03048.

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.

field - field to which the elements belong

Returns:

the height correction, in m