Class ModifiedHopfieldModel
- java.lang.Object
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- org.orekit.models.earth.troposphere.ModifiedHopfieldModel
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- All Implemented Interfaces:
TroposphericModel
,ParameterDriversProvider
public class ModifiedHopfieldModel extends Object implements TroposphericModel
The modified Hopfield model.This model from Hopfield 1969, 1970, 1972 is described in equations 5.105, 5.106, 5.107 and 5.108 in Guochang Xu, GPS - Theory, Algorithms and Applications, Springer, 2007.
- Since:
- 12.1
- Author:
- Luc Maisonobe
- See Also:
- "Guochang Xu, GPS - Theory, Algorithms and Applications, Springer, 2007"
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Constructor Summary
Constructors Constructor Description ModifiedHopfieldModel()
Create a new Hopfield model.
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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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Method Detail
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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.The Saastamoinen model is not defined for altitudes below 0.0. for continuity reasons, we use the value for h = 0 when altitude is negative.
There are also numerical issues for elevation angles close to zero. For continuity reasons, elevations lower than a threshold will use the value obtained for the threshold itself.
- 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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getParametersDrivers
public List<ParameterDriver> getParametersDrivers()
Get the drivers for parameters.- Specified by:
getParametersDrivers
in interfaceParameterDriversProvider
- Returns:
- drivers for parameters
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