AttitudeCovariance.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.files.ccsds.ndm.adm.acm;
import java.util.List;
import org.hipparchus.linear.DiagonalMatrix;
import org.orekit.time.AbsoluteDate;
import org.orekit.time.TimeStamped;
import org.orekit.utils.units.Unit;
/** Covariance entry.
* @author Luc Maisonobe
* @since 12.0
*/
public class AttitudeCovariance implements TimeStamped {
/** Type of the elements. */
private final AttitudeCovarianceType type;
/** Entry date. */
private final AbsoluteDate date;
/** Covariance matrix. */
private final DiagonalMatrix matrix;
/** Simple constructor.
* @param type type of the elements
* @param date entry date
* @param fields matrix diagonal elements
* @param first index of first field to consider
*/
public AttitudeCovariance(final AttitudeCovarianceType type, final AbsoluteDate date,
final String[] fields, final int first) {
final List<Unit> units = type.getUnits();
this.type = type;
this.date = date;
this.matrix = new DiagonalMatrix(units.size());
for (int k = 0; k < matrix.getRowDimension(); ++k) {
matrix.setEntry(k, k, units.get(k).toSI(Double.parseDouble(fields[first + k])));
}
}
/** {@inheritDoc} */
@Override
public AbsoluteDate getDate() {
return date;
}
/** Get the covariance matrix.
* @return covariance matrix
*/
public DiagonalMatrix getMatrix() {
return matrix;
}
/** Get the type of the elements.
* @return type of the elements
*/
public AttitudeCovarianceType getType() {
return type;
}
}