MeasurementDecorator.java
- /* Copyright 2002-2020 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.sequential;
- import org.hipparchus.filtering.kalman.Measurement;
- import org.hipparchus.linear.MatrixUtils;
- import org.hipparchus.linear.RealMatrix;
- import org.hipparchus.linear.RealVector;
- import org.orekit.estimation.measurements.ObservedMeasurement;
- import org.orekit.time.AbsoluteDate;
- /** Decorator adding {@link Measurement} API to an {@link ObservedMeasurement}.
- * @author Luc Maisonobe
- * @since 9.2
- */
- public class MeasurementDecorator implements Measurement {
- /** Wrapped observed measurement. */
- private final ObservedMeasurement<?> observedMeasurement;
- /** Covariance. */
- private final RealMatrix covariance;
- /** Reference date. */
- private final AbsoluteDate reference;
- /** Simple constructor.
- * @param observedMeasurement observed measurement
- * @param covariance measurement covariance
- * @param reference reference date
- */
- public MeasurementDecorator(final ObservedMeasurement<?> observedMeasurement,
- final RealMatrix covariance, final AbsoluteDate reference) {
- this.observedMeasurement = observedMeasurement;
- this.covariance = covariance;
- this.reference = reference;
- }
- /** Get the observed measurement.
- * @return observed measurement
- */
- public ObservedMeasurement<?> getObservedMeasurement() {
- return observedMeasurement;
- }
- /** {@inheritDoc} */
- @Override
- public double getTime() {
- return observedMeasurement.getDate().durationFrom(reference);
- }
- /** {@inheritDoc} */
- @Override
- public RealVector getValue() {
- return MatrixUtils.createRealVector(observedMeasurement.getObservedValue());
- }
- /** {@inheritDoc} */
- @Override
- public RealMatrix getCovariance() {
- return covariance;
- }
- }