MultiplexedMeasurementBuilder.java
- /* Copyright 2002-2024 Luc Maisonobe
- * 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.ArrayList;
- import java.util.Collections;
- import java.util.List;
- import java.util.Map;
- import org.orekit.estimation.measurements.EstimationModifier;
- import org.orekit.estimation.measurements.MultiplexedMeasurement;
- import org.orekit.estimation.measurements.ObservableSatellite;
- import org.orekit.estimation.measurements.ObservedMeasurement;
- import org.orekit.propagation.sampling.OrekitStepInterpolator;
- import org.orekit.time.AbsoluteDate;
- /** Builder for {@link MultiplexedMeasurement} measurements.
- * @author Luc Maisonobe
- * @since 12.0
- */
- public class MultiplexedMeasurementBuilder implements MeasurementBuilder<MultiplexedMeasurement> {
- /** Builders for individual measurements. */
- private final List<MeasurementBuilder<?>> builders;
- /** Satellites related to this builder. */
- private final ObservableSatellite[] satellites;
- /** Modifiers that apply to the measurement.*/
- private final List<EstimationModifier<MultiplexedMeasurement>> modifiers;
- /** Simple constructor.
- * @param builders builders for multiplexed measurements
- */
- public MultiplexedMeasurementBuilder(final List<MeasurementBuilder<?>> builders) {
- this.builders = builders;
- this.modifiers = new ArrayList<>();
- final List<ObservableSatellite> list = new ArrayList<>();
- for (final MeasurementBuilder<?> builder : builders) {
- for (final ObservableSatellite satellite : builder.getSatellites()) {
- if (!list.contains(satellite)) {
- list.add(satellite);
- }
- }
- }
- this.satellites = list.toArray(new ObservableSatellite[0]);
- }
- /** {@inheritDoc}
- * <p>
- * This implementation stores the time span of the measurements generation.
- * </p>
- */
- @Override
- public void init(final AbsoluteDate start, final AbsoluteDate end) {
- for (final MeasurementBuilder<?> builder : builders) {
- builder.init(start, end);
- }
- }
- /** {@inheritDoc} */
- @Override
- public void addModifier(final EstimationModifier<MultiplexedMeasurement> modifier) {
- modifiers.add(modifier);
- }
- /** {@inheritDoc} */
- @Override
- public List<EstimationModifier<MultiplexedMeasurement>> getModifiers() {
- return Collections.unmodifiableList(modifiers);
- }
- /** {@inheritDoc} */
- @Override
- public MultiplexedMeasurement build(final AbsoluteDate date, final Map<ObservableSatellite, OrekitStepInterpolator> interpolators) {
- final List<ObservedMeasurement<?>> measurements = new ArrayList<>(builders.size());
- for (final MeasurementBuilder<?> builder : builders) {
- measurements.add(builder.build(date, interpolators));
- }
- // generate measurement
- final MultiplexedMeasurement measurement = new MultiplexedMeasurement(measurements);
- for (final EstimationModifier<MultiplexedMeasurement> modifier : getModifiers()) {
- measurement.addModifier(modifier);
- }
- return measurement;
- }
- /** {@inheritDoc} */
- @Override
- public ObservableSatellite[] getSatellites() {
- return satellites.clone();
- }
- }