RelativisticClockInterSatellitesOneWayRangeRateModifier.java
/* Copyright 2002-2024 Thales Alenia Space
* Licensed to CS GROUP (CS) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* CS licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.orekit.estimation.measurements.modifiers;
import org.orekit.estimation.measurements.EstimatedMeasurementBase;
import org.orekit.estimation.measurements.gnss.InterSatellitesOneWayRangeRate;
import org.orekit.propagation.SpacecraftState;
/** Class modifying theoretical range-rate measurement with relativistic frequency deviation.
* <p>
* Relativistic clock correction is caused by the motion of the satellite as well as
* the change in the gravitational potential
* </p>
* @author Luc Maisonobe
* @since 12.1
*
* @see "Teunissen, Peter, and Oliver Montenbruck, eds. Springer handbook of global navigation
* satellite systems. Chapter 19.2. Springer, 2017."
*/
public class RelativisticClockInterSatellitesOneWayRangeRateModifier
extends AbstractRelativisticClockOnBoardRangeRateModifier<InterSatellitesOneWayRangeRate> {
/** Simple constructor.
* @param gm gravitational constant for main body in signal path vicinity.
*/
public RelativisticClockInterSatellitesOneWayRangeRateModifier(final double gm) {
super(gm);
}
/** {@inheritDoc} */
@Override
public void modifyWithoutDerivatives(final EstimatedMeasurementBase<InterSatellitesOneWayRangeRate> estimated) {
final SpacecraftState local = estimated.getStates()[0];
final SpacecraftState remote = estimated.getStates()[1];
modifyWithoutDerivatives(estimated,
local.getA(), local.getPosition().getNorm(),
remote.getA(), remote.getPosition().getNorm());
}
}