Package org.orekit.models.earth.troposphere

Class ViennaOne

java.lang.Object

org.orekit.models.earth.troposphere.AbstractVienna

org.orekit.models.earth.troposphere.ViennaOne

All Implemented Interfaces:

TroposphereMappingFunction, TroposphericModel, ParameterDriversProvider

public class ViennaOne
extends AbstractVienna

The Vienna 1 tropospheric delay model for radio techniques. The Vienna model data are given with a time interval of 6 hours as well as on a global 2.5° * 2.0° grid. This version considered the height correction for the hydrostatic part developed by Niell, 1996.

Since:

12.1

Author:

Bryan Cazabonne, Luc Maisonobe

See Also:

"Boehm, J., Werl, B., and Schuh, H., (2006), Troposhere mapping functions for GPS and very long baseline interferometry from European Centre for Medium-Range Weather Forecasts operational analysis data, J. Geophy. Res., Vol. 111, B02406, doi:10.1029/2005JB003629"

Constructor Summary

Constructors

Constructor	Description
ViennaOne(ViennaAProvider aProvider, AzimuthalGradientProvider gProvider, TroposphericModel zenithDelayProvider, TimeScale utc)	Build a new instance.

Method Summary

Modifier and Type	Method	Description
List<ParameterDriver>	getParametersDrivers()	Get the drivers for parameters.
<T extends CalculusFieldElement<T>> T[]	mappingFactors(FieldTrackingCoordinates<T> trackingCoordinates, FieldGeodeticPoint<T> point, FieldPressureTemperatureHumidity<T> weather, FieldAbsoluteDate<T> date)	This method allows the computation of the hydrostatic and wet mapping functions.
double[]	mappingFactors(TrackingCoordinates trackingCoordinates, GeodeticPoint point, PressureTemperatureHumidity weather, AbsoluteDate date)	This method allows the computation of the hydrostatic and wet mapping functions.

Methods inherited from class org.orekit.models.earth.troposphere.AbstractVienna

getAProvider, getDayOfYear, pathDelay, pathDelay

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported

Constructor Detail

ViennaOne

public ViennaOne(ViennaAProvider aProvider,
                 AzimuthalGradientProvider gProvider,
                 TroposphericModel zenithDelayProvider,
                 TimeScale utc)

Build a new instance.

Parameters:

aProvider - provider for a_h and a_w coefficients

gProvider - provider for AzimuthalGradientCoefficients and FieldAzimuthalGradientCoefficients

zenithDelayProvider - provider for zenith delays

utc - UTC time scale

Method Detail

mappingFactors

public double[] mappingFactors(TrackingCoordinates trackingCoordinates,
                               GeodeticPoint point,
                               PressureTemperatureHumidity weather,
                               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

Parameters:

trackingCoordinates - tracking coordinates of the satellite

point - station location

weather - weather parameters

date - current date

Returns:

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

mappingFactors

public <T extends CalculusFieldElement<T>> T[] mappingFactors(FieldTrackingCoordinates<T> trackingCoordinates,
                                                              FieldGeodeticPoint<T> point,
                                                              FieldPressureTemperatureHumidity<T> weather,
                                                              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:

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

Type Parameters:

T - type of the elements

Parameters:

trackingCoordinates - tracking coordinates of the satellite

point - station location

weather - weather parameters

date - current date

Returns:

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

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for parameters.

Specified by:

getParametersDrivers in interface ParameterDriversProvider

Overrides:

getParametersDrivers in class AbstractVienna

Returns:

drivers for parameters