ShapiroInterSatelliteRangeModifier.java

  1. /* Copyright 2002-2020 CS GROUP
  2.  * Licensed to CS GROUP (CS) under one or more
  3.  * contributor license agreements.  See the NOTICE file distributed with
  4.  * this work for additional information regarding copyright ownership.
  5.  * CS licenses this file to You under the Apache License, Version 2.0
  6.  * (the "License"); you may not use this file except in compliance with
  7.  * the License.  You may obtain a copy of the License at
  8.  *
  9.  *   http://www.apache.org/licenses/LICENSE-2.0
  10.  *
  11.  * Unless required by applicable law or agreed to in writing, software
  12.  * distributed under the License is distributed on an "AS IS" BASIS,
  13.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14.  * See the License for the specific language governing permissions and
  15.  * limitations under the License.
  16.  */
  17. package org.orekit.estimation.measurements.modifiers;

  18. import java.util.Collections;
  19. import java.util.List;

  20. import org.orekit.estimation.measurements.EstimatedMeasurement;
  21. import org.orekit.estimation.measurements.EstimationModifier;
  22. import org.orekit.estimation.measurements.InterSatellitesRange;
  23. import org.orekit.utils.ParameterDriver;

  24. /** Class modifying theoretical range measurement with Shapiro time delay.
  25.  * <p>
  26.  * Shapiro time delay is a relativistic effect due to gravity.
  27.  * </p>
  28.  *
  29.  * @author Luc Maisonobe
  30.  * @since 10.0
  31.  */
  32. public class ShapiroInterSatelliteRangeModifier extends AbstractShapiroBaseModifier implements EstimationModifier<InterSatellitesRange> {

  33.     /** Simple constructor.
  34.      * @param gm gravitational constant for main body in signal path vicinity.
  35.      */
  36.     public ShapiroInterSatelliteRangeModifier(final double gm) {
  37.         super(gm);
  38.     }

  39.     /** {@inheritDoc} */
  40.     @Override
  41.     public List<ParameterDriver> getParametersDrivers() {
  42.         return Collections.emptyList();
  43.     }

  44.     /** {@inheritDoc} */
  45.     @Override
  46.     public void modify(final EstimatedMeasurement<InterSatellitesRange> estimated) {
  47.         doModify(estimated);
  48.     }

  49. }