Package org.orekit.estimation.measurements.modifiers

Class AbstractRelativisticJ2ClockModifier

java.lang.Object

org.orekit.estimation.measurements.modifiers.AbstractRelativisticJ2ClockModifier

Direct Known Subclasses:

RelativisticJ2ClockInterSatellitesPhaseModifier, RelativisticJ2ClockInterSatellitesRangeModifier, RelativisticJ2ClockOneWayGNSSPhaseModifier, RelativisticJ2ClockOneWayGNSSRangeModifier, RelativisticJ2ClockPhaseModifier, RelativisticJ2ClockRangeModifier

public class AbstractRelativisticJ2ClockModifier
extends Object

Class modifying theoretical 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
AbstractRelativisticJ2ClockModifier(double gm, double c20, double equatorialRadius)	Constructor for the Relativistic J2 Clock modifier.

Method Summary

Modifier and Type	Method	Description
String	getEffectName()	Get the name of the effect modifying the measurement.
protected double	relativisticJ2Correction(EstimatedMeasurementBase<?> estimated)	Computes the relativistic J2 clock time delay correction.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractRelativisticJ2ClockModifier

public AbstractRelativisticJ2ClockModifier(double gm,
 double c20,
 double equatorialRadius)

Constructor for the Relativistic J2 Clock modifier.

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

getEffectName

public String getEffectName()

Get the name of the effect modifying the measurement.

Returns:

name of the effect modifying the measurement

Since:

13.0

relativisticJ2Correction

protected double relativisticJ2Correction(EstimatedMeasurementBase<?> estimated)

Computes the relativistic J2 clock time delay correction.

Parameters:

estimated - EstimatedMeasurements on which to calculate the correction

Returns:

dt_relJ2clk Time delay due to the relativistic J2 clock effect in seconds