RangeRateBuilder.java
/* Copyright 2002-2024 CS GROUP
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.orekit.estimation.measurements.generation;
import java.util.Map;
import org.hipparchus.random.CorrelatedRandomVectorGenerator;
import org.orekit.estimation.measurements.GroundStation;
import org.orekit.estimation.measurements.ObservableSatellite;
import org.orekit.estimation.measurements.RangeRate;
import org.orekit.propagation.sampling.OrekitStepInterpolator;
import org.orekit.time.AbsoluteDate;
/** Builder for {@link RangeRate} measurements.
* @author Luc Maisonobe
* @since 9.3
*/
public class RangeRateBuilder extends AbstractMeasurementBuilder<RangeRate> {
/** Ground station from which measurement is performed. */
private final GroundStation station;
/** Flag indicating whether it is a two-way measurement. */
private final boolean twoway;
/** Simple constructor.
* @param noiseSource noise source, may be null for generating perfect measurements
* @param station ground station from which measurement is performed
* @param twoWay flag indicating whether it is a two-way measurement
* @param sigma theoretical standard deviation
* @param baseWeight base weight
* @param satellite satellite related to this builder
*/
public RangeRateBuilder(final CorrelatedRandomVectorGenerator noiseSource,
final GroundStation station, final boolean twoWay,
final double sigma, final double baseWeight,
final ObservableSatellite satellite) {
super(noiseSource, sigma, baseWeight, satellite);
this.station = station;
this.twoway = twoWay;
}
/** {@inheritDoc} */
@Override
protected RangeRate buildObserved(final AbsoluteDate date,
final Map<ObservableSatellite, OrekitStepInterpolator> interpolators) {
return new RangeRate(station, date, Double.NaN,
getTheoreticalStandardDeviation()[0],
getBaseWeight()[0], twoway, getSatellites()[0]);
}
}