Class EstimatedModel
- java.lang.Object
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- org.orekit.models.earth.troposphere.EstimatedModel
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- All Implemented Interfaces:
TroposphericModel
,ParameterDriversProvider
- Direct Known Subclasses:
EstimatedTroposphericModel
public class EstimatedModel extends Object implements TroposphericModel
An estimated tropospheric model. The tropospheric delay is computed according to the formula:δ = δh * mh + (δt - δh) * mw
With:
- δh: Tropospheric zenith hydro-static delay.
- δt: Tropospheric total zenith delay.
- mh: Hydro-static mapping function.
- mw: Wet mapping function.
The mapping functions mh(e) and mw(e) are computed thanks to a
model
initialized by the user. The user has the possibility to use several mapping function models for the computations: theGlobal Mapping Function
, or theNiell Mapping Function
The tropospheric zenith delay δh is computed empirically with a
tropospheric model
while the tropospheric total zenith delay δt is estimated as aParameterDriver
, hence the wet part is the difference between the two.- Since:
- 12.1
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Field Summary
Fields Modifier and Type Field Description static String
TOTAL_ZENITH_DELAY
Name of the parameter of this model: the total zenith delay.
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Constructor Summary
Constructors Constructor Description EstimatedModel(double h0, double t0, double p0, TroposphereMappingFunction model, double totalDelay)
Build a new instance using the given environmental conditions.EstimatedModel(TroposphereMappingFunction model, double totalDelay)
Build a new instance using a standard atmosphere model.EstimatedModel(TroposphericModel hydrostatic, TroposphereMappingFunction model, double totalDelay)
Build a new instance using the given environmental conditions.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description List<ParameterDriver>
getParametersDrivers()
Get the drivers for parameters.<T extends CalculusFieldElement<T>>
FieldTroposphericDelay<T>pathDelay(FieldTrackingCoordinates<T> trackingCoordinates, FieldGeodeticPoint<T> point, FieldPressureTemperatureHumidity<T> weather, T[] parameters, FieldAbsoluteDate<T> date)
Calculates the tropospheric path delay for the signal path from a ground station to a satellite.TroposphericDelay
pathDelay(TrackingCoordinates trackingCoordinates, GeodeticPoint point, PressureTemperatureHumidity weather, double[] parameters, AbsoluteDate 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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Field Detail
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TOTAL_ZENITH_DELAY
public static final String TOTAL_ZENITH_DELAY
Name of the parameter of this model: the total zenith delay.- See Also:
- Constant Field Values
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Constructor Detail
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EstimatedModel
@DefaultDataContext public EstimatedModel(double h0, double t0, double p0, TroposphereMappingFunction model, double totalDelay)
Build a new instance using the given environmental conditions.This constructor uses a
ModifiedSaastamoinenModel
for the hydrostatic contribution.- Parameters:
h0
- altitude of the station [m]t0
- the temperature at the station [K]p0
- the atmospheric pressure at the station [mbar]model
- mapping function model.totalDelay
- initial value for the tropospheric zenith total delay [m]
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EstimatedModel
public EstimatedModel(TroposphericModel hydrostatic, TroposphereMappingFunction model, double totalDelay)
Build a new instance using the given environmental conditions.- Parameters:
hydrostatic
- model for hydrostatic componentmodel
- mapping function model.totalDelay
- initial value for the tropospheric zenith total delay [m]- Since:
- 12.1
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EstimatedModel
@DefaultDataContext public EstimatedModel(TroposphereMappingFunction model, double totalDelay)
Build a new instance using a standard atmosphere model.- altitude: 0m
- temperature: 18 degree Celsius
- pressure: 1013.25 mbar
- Parameters:
model
- mapping function model.totalDelay
- initial value for the tropospheric zenith total delay [m]
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Method Detail
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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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pathDelay
public TroposphericDelay pathDelay(TrackingCoordinates trackingCoordinates, GeodeticPoint point, PressureTemperatureHumidity weather, double[] parameters, AbsoluteDate date)
Calculates the tropospheric path delay for the signal path from a ground station to a satellite.- Specified by:
pathDelay
in interfaceTroposphericModel
- Parameters:
trackingCoordinates
- tracking coordinates of the satellitepoint
- station locationweather
- weather parameters for constant default values)parameters
- tropospheric model parametersdate
- current date- Returns:
- the path delay due to the troposphere
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pathDelay
public <T extends CalculusFieldElement<T>> FieldTroposphericDelay<T> pathDelay(FieldTrackingCoordinates<T> trackingCoordinates, FieldGeodeticPoint<T> point, FieldPressureTemperatureHumidity<T> weather, 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 interfaceTroposphericModel
- Type Parameters:
T
- type of the elements- Parameters:
trackingCoordinates
- tracking coordinates of the satellitepoint
- station locationweather
- weather parameters for constant default values)parameters
- tropospheric model parameters at current datedate
- current date- Returns:
- the path delay due to the troposphere
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