Package org.orekit.estimation.measurements.modifiers

Class RelativisticJ2ClockRangeModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.AbstractRelativisticJ2ClockModifier

org.orekit.estimation.measurements.modifiers.RelativisticJ2ClockRangeModifier

All Implemented Interfaces:

EstimationModifier<Range>, ParameterDriversProvider

public class RelativisticJ2ClockRangeModifier
extends AbstractRelativisticJ2ClockModifier
implements EstimationModifier<Range>

Class modifying theoretical range measurements with relativistic J2 clock correction.

Relativistic clock correction of the effects caused by the oblateness of Earth on the gravity potential.

The time delay caused by this effect is computed based on the orbital parameters of the emitter's orbit.

Since:

11.2

Author:

Louis Aucouturier

See Also:

• "Teunissen, Peter, and Oliver Montenbruck, eds. Springer handbook of global navigation satellite systems. Chapter 19.2. Equation 19.18 Springer, 2017."

Constructor Summary

Constructors

Constructor	Description
RelativisticJ2ClockRangeModifier(double gm, double c20, double equatorialRadius)	Modifier constructor.

Method Summary

Modifier and Type	Method	Description
boolean	dependsOnParticipantsStates()	Method stating if the modifier requires for its computation the storage of the measurement's participants full dynamical states (position, velocity and acceleration) rather than the date, the non-modified value, etc.
List<ParameterDriver>	getParametersDrivers()	Get the drivers for parameters.
void	modifyWithoutDerivatives(EstimatedMeasurementBase<Range> estimated)	Apply a modifier to an estimated measurement without derivatives.

Methods inherited from class org.orekit.estimation.measurements.modifiers.AbstractRelativisticJ2ClockModifier

getEffectName, relativisticJ2Correction

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.estimation.measurements.EstimationModifier

getEffectName, modify

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

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

Constructor Details

RelativisticJ2ClockRangeModifier

public RelativisticJ2ClockRangeModifier(double gm,
 double c20,
 double equatorialRadius)

Modifier constructor.

Parameters:

gm - Earth gravitational constant (mu) in m³/s².

c20 - Earth un-normalized second zonal coefficient (Signed J2 constant, is negative) (Typical value -1.0826e-3).

equatorialRadius - Earth equatorial radius in m.

Method Details

getParametersDrivers

public List<ParameterDriver> getParametersDrivers()

Get the drivers for parameters.

Specified by:

getParametersDrivers in interface ParameterDriversProvider

Returns:

drivers for parameters

modifyWithoutDerivatives

public void modifyWithoutDerivatives(EstimatedMeasurementBase<Range> estimated)

Apply a modifier to an estimated measurement without derivatives.

Specified by:

modifyWithoutDerivatives in interface EstimationModifier<Range>

Parameters:

estimated - estimated measurement to modify

dependsOnParticipantsStates

public boolean dependsOnParticipantsStates()

Method stating if the modifier requires for its computation the storage of the measurement's participants full dynamical states (position, velocity and acceleration) rather than the date, the non-modified value, etc. The negative case shall be exploited for performance and is the default implementation.

Specified by:

dependsOnParticipantsStates in interface EstimationModifier<Range>

Returns:

dependence flag