OceanLoadingCoefficients.java
/* Copyright 2002-2021 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,
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*/
package org.orekit.models.earth.displacement;
import org.orekit.bodies.GeodeticPoint;
/**
* Site specific coefficients for ocean loading.
* <p>
* Instances of this class are typically created by
* {@link OceanLoadingCoefficientsBLQFactory} that parses
* files from Onsala Space Observatory files in BLQ format
* found in the Orekit data configuration.
* </p>
* <p>
* Instances of this class are guaranteed to be immutable
* </p>
* @see org.orekit.estimation.measurements.GroundStation
* @see OceanLoadingCoefficientsBLQFactory
* @see OceanLoading
* @since 9.1
* @author Luc Maisonobe
*/
public class OceanLoadingCoefficients {
/** Site name. */
private final String siteName;
/** Site location. */
private final GeodeticPoint siteLocation;
/** Main tides by species and increasing rate. */
private final Tide[][] tides;
/** Amplitude along zenith axis for main tides by species and increasing rate. */
private final double[][] zAmplitude;
/** Phase along zenith axis for main tides by species and increasing rate. */
private final double[][] zPhase;
/** Amplitude along West axis for main tides by species and increasing rate. */
private final double[][] wAmplitude;
/** Phase along West axis for main tides by species and increasing rate. */
private final double[][] wPhase;
/** Amplitude along South axis for main tides by species and increasing rate. */
private final double[][] sAmplitude;
/** Phase along South axis for main tides by species and increasing rate. */
private final double[][] sPhase;
/** Simple constructor.
* <p>
* Arrays must be organized by species and sorted in increasing rate order.
* @param siteName site name
* @param siteLocation site location
* @param tides main tides, by species and increasing rate
* @param zAmplitude amplitude along zenith axis
* @param zPhase phase along zenith axis
* @param wAmplitude amplitude along West
* @param wPhase phase along West axis
* @param sAmplitude amplitude along South
* @param sPhase phase along South axis
*/
public OceanLoadingCoefficients(final String siteName, final GeodeticPoint siteLocation,
final Tide[][] tides,
final double[][] zAmplitude, final double[][] zPhase,
final double[][] wAmplitude, final double[][] wPhase,
final double[][] sAmplitude, final double[][] sPhase) {
this.siteName = siteName;
this.siteLocation = siteLocation;
this.tides = copy(tides);
this.zAmplitude = copy(zAmplitude);
this.zPhase = copy(zPhase);
this.wAmplitude = copy(wAmplitude);
this.wPhase = copy(wPhase);
this.sAmplitude = copy(sAmplitude);
this.sPhase = copy(sPhase);
}
/** Deep copy of a variable rows tides array.
* @param array to copy
* @return copied array
*/
private Tide[][] copy(final Tide[][] array) {
final Tide[][] copied = new Tide[array.length][];
for (int i = 0; i < array.length; ++i) {
copied[i] = array[i].clone();
}
return copied;
}
/** Deep copy of a variable rows double array.
* @param array to copy
* @return copied array
*/
private double[][] copy(final double[][] array) {
final double[][] copied = new double[array.length][];
for (int i = 0; i < array.length; ++i) {
copied[i] = array[i].clone();
}
return copied;
}
/** Get the site name.
* @return site name
*/
public String getSiteName() {
return siteName;
}
/** Get the site location.
* @return site location
*/
public GeodeticPoint getSiteLocation() {
return siteLocation;
}
/** Get the tide.
* @param i species
* @param j tide in the species
* @return tide
*/
public Tide getTide(final int i, final int j) {
return tides[i][j];
}
/** Get the amplitude along zenith axis.
* @param i species
* @param j tide in the species
* @return amplitude along zenith axis
*/
public double getZenithAmplitude(final int i, final int j) {
return zAmplitude[i][j];
}
/** Get the phase along zenith axis.
* @param i species
* @param j tide in the species
* @return phase along zenith axis
*/
public double getZenithPhase(final int i, final int j) {
return zPhase[i][j];
}
/** Get the amplitude along west axis.
* @param i species
* @param j tide in the species
* @return amplitude along west axis
*/
public double getWestAmplitude(final int i, final int j) {
return wAmplitude[i][j];
}
/** Get the phase along West axis.
* @param i species
* @param j tide in the species
* @return phase along West axis
*/
public double getWestPhase(final int i, final int j) {
return wPhase[i][j];
}
/** Get the amplitude along South axis.
* @param i species
* @param j tide in the species
* @return amplitude along South axis
*/
public double getSouthAmplitude(final int i, final int j) {
return sAmplitude[i][j];
}
/** Get the phase along South axis.
* @param i species
* @param j tide in the species
* @return phase along South axis
*/
public double getSouthPhase(final int i, final int j) {
return sPhase[i][j];
}
/** Get the number of species.
* @return number of species
*/
public int getNbSpecies() {
return tides.length;
}
/** Get the number of tides for one species.
* @param species species index
* @return number of tides for one species
*/
public int getNbTides(final int species) {
return tides[species].length;
}
}