Class MendesPavlisModel
- java.lang.Object
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- org.orekit.models.earth.troposphere.MendesPavlisModel
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- All Implemented Interfaces:
DiscreteTroposphericModel
,MappingFunction
,ParameterDriversProvider
public class MendesPavlisModel extends Object implements DiscreteTroposphericModel, MappingFunction
The Mendes - Pavlis tropospheric delay model for optical techniques. It is valid for a wide range of wavelengths from 0.355µm to 1.064µm (Mendes and Pavlis, 2003)- Author:
- Bryan Cazabonne
- See Also:
- "Mendes, V. B., & Pavlis, E. C. (2004). High‐accuracy zenith delay prediction at optical wavelengths. Geophysical Research Letters, 31(14).", "Petit, G. and Luzum, B. (eds.), IERS Conventions (2010), IERS Technical Note No. 36, BKG (2010)"
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Constructor Summary
Constructors Constructor Description MendesPavlisModel(double t0, double p0, double rh, double lambda)
Create a new Mendes-Pavlis model for the troposphere.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description <T extends CalculusFieldElement<T>>
T[]computeZenithDelay(FieldGeodeticPoint<T> point, T[] parameters, FieldAbsoluteDate<T> date)
This method allows the computation of the zenith hydrostatic and zenith wet delay.double[]
computeZenithDelay(GeodeticPoint point, double[] parameters, AbsoluteDate date)
This method allows the computation of the zenith hydrostatic and zenith wet delay.List<ParameterDriver>
getParametersDrivers()
Get the drivers for parameters.static MendesPavlisModel
getStandardModel(double lambda)
Create a new Mendes-Pavlis model using a standard atmosphere model.double[]
mappingFactors(double elevation, GeodeticPoint point, AbsoluteDate date)
With the Mendes Pavlis tropospheric model, the mapping function is not split into hydrostatic and wet component.<T extends CalculusFieldElement<T>>
T[]mappingFactors(T elevation, FieldGeodeticPoint<T> point, FieldAbsoluteDate<T> date)
With the Mendes Pavlis tropospheric model, the mapping function is not split into hydrostatic and wet component.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>>
TpathDelay(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
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Methods inherited from interface org.orekit.utils.ParameterDriversProvider
getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported
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Constructor Detail
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MendesPavlisModel
public MendesPavlisModel(double t0, double p0, double rh, double lambda)
Create a new Mendes-Pavlis model for the troposphere. This initialisation will compute the water vapor pressure thanks to the values of the pressure, the temperature and the humidity- Parameters:
t0
- the temperature at the station, Kp0
- the atmospheric pressure at the station, hParh
- the humidity at the station, percent (50% → 0.5)lambda
- laser wavelength, µm
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Method Detail
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getStandardModel
public static MendesPavlisModel getStandardModel(double lambda)
Create a new Mendes-Pavlis model using a standard atmosphere model.- temperature: 18 degree Celsius
- pressure: 1013.25 hPa
- humidity: 50%
- Parameters:
lambda
- laser wavelength, µm- Returns:
- a Mendes-Pavlis model with standard environmental values
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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 interfaceDiscreteTroposphericModel
- Parameters:
elevation
- the elevation of the satellite, in radianspoint
- station locationparameters
- tropospheric model parametersdate
- current date- Returns:
- the path delay due to the troposphere in m
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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 interfaceDiscreteTroposphericModel
- Type Parameters:
T
- type of the elements- Parameters:
elevation
- the elevation of the satellite, in radianspoint
- station locationparameters
- tropospheric model parameters at current datedate
- current date- Returns:
- the path delay due to the troposphere in m
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computeZenithDelay
public double[] computeZenithDelay(GeodeticPoint point, 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] = Dhz → zenith hydrostatic delay
- double[1] = Dwz → zenith wet delay
- Parameters:
point
- station locationparameters
- tropospheric model parametersdate
- current date- Returns:
- a two components array containing the zenith hydrostatic and wet delays.
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computeZenithDelay
public <T extends CalculusFieldElement<T>> T[] computeZenithDelay(FieldGeodeticPoint<T> point, 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:- T[0] = Dhz → zenith hydrostatic delay
- T[1] = Dwz → zenith wet delay
- Type Parameters:
T
- type of the elements- Parameters:
point
- station locationparameters
- tropospheric model parametersdate
- current date- Returns:
- a two components array containing the zenith hydrostatic and wet delays.
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mappingFactors
public double[] mappingFactors(double elevation, GeodeticPoint point, AbsoluteDate date)
With the Mendes Pavlis tropospheric model, the mapping function is not split into hydrostatic and wet component.Therefore, the two components of the resulting array are equals.
- double[0] = m(e) → total mapping function
- double[1] = m(e) → total mapping function
The total delay will thus be computed as:
δ = Dhz * m(e) + Dwz * m(e)
δ = (Dhz + Dwz) * m(e) = δz * m(e)- Specified by:
mappingFactors
in interfaceMappingFunction
- Parameters:
elevation
- the elevation of the satellite, in radianspoint
- station locationdate
- current date- Returns:
- a two components array containing the hydrostatic and wet mapping functions.
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mappingFactors
public <T extends CalculusFieldElement<T>> T[] mappingFactors(T elevation, FieldGeodeticPoint<T> point, FieldAbsoluteDate<T> date)
With the Mendes Pavlis tropospheric model, the mapping function is not split into hydrostatic and wet component.Therefore, the two components of the resulting array are equals.
- double[0] = m(e) → total mapping function
- double[1] = m(e) → total mapping function
The total delay will thus be computed as:
δ = Dhz * m(e) + Dwz * m(e)
δ = (Dhz + Dwz) * m(e) = δz * m(e)- Specified by:
mappingFactors
in interfaceMappingFunction
- Type Parameters:
T
- type of the elements- Parameters:
elevation
- the elevation of the satellite, in radianspoint
- station locationdate
- current date- Returns:
- a two components array containing the hydrostatic and wet mapping functions.
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getParametersDrivers
public List<ParameterDriver> getParametersDrivers()
Get the drivers for parameters.- Specified by:
getParametersDrivers
in interfaceParameterDriversProvider
- Returns:
- drivers for parameters
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