org.orekit.estimation.measurements.modifiers

Class RangeRateTroposphericDelayModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.RangeRateTroposphericDelayModifier

All Implemented Interfaces:

EstimationModifier<RangeRate>

public class RangeRateTroposphericDelayModifier
extends Object
implements EstimationModifier<RangeRate>

Class modifying theoretical range-rate measurements with tropospheric delay. The effect of tropospheric correction on the range-rate is directly computed through the computation of the tropospheric delay difference with respect to time. In general, for GNSS, VLBI, ... there is hardly any frequency dependence in the delay. For SLR techniques however, the frequency dependence is sensitive.

Since:

8.0

Author:

Joris Olympio

Constructor Summary

Constructors

Constructor and Description
RangeRateTroposphericDelayModifier(TroposphericModel model, boolean tw) Constructor.

Method Summary

Modifier and Type	Method and Description
List<ParameterDriver>	getParametersDrivers() Get the drivers for this modifier parameters.
void	modify(EstimatedMeasurement<RangeRate> estimated) Apply a modifier to an estimated measurement.
double	rangeRateErrorTroposphericModel(GroundStation station, SpacecraftState state) Compute the measurement error due to Troposphere.

Methods inherited from class java.lang.Object

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

Constructor Detail

RangeRateTroposphericDelayModifier

public RangeRateTroposphericDelayModifier(TroposphericModel model,
                                          boolean tw)

Constructor.

Parameters:

model - Tropospheric delay model appropriate for the current range-rate measurement method.

tw - Flag indicating whether the measurement is two-way.

Method Detail

rangeRateErrorTroposphericModel

public double rangeRateErrorTroposphericModel(GroundStation station,
                                              SpacecraftState state)
                                       throws OrekitException

Compute the measurement error due to Troposphere.

Parameters:

station - station

state - spacecraft state

Returns:

the measurement error due to Troposphere

Throws:

OrekitException - if frames transformations cannot be computed

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for this modifier parameters.

Specified by:

getParametersDrivers in interface EstimationModifier<RangeRate>

Returns:

drivers for this modifier parameters

modify

public void modify(EstimatedMeasurement<RangeRate> estimated)
            throws OrekitException

Apply a modifier to an estimated measurement.

Specified by:

modify in interface EstimationModifier<RangeRate>

Parameters:

estimated - estimated measurement to modify

Throws:

OrekitException - if modifier cannot be applied