Sinex.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,
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package org.orekit.files.sinex;
import org.orekit.frames.EopHistoryLoader;
import org.orekit.frames.ITRFVersion;
import org.orekit.time.AbsoluteDate;
import org.orekit.time.ChronologicalComparator;
import org.orekit.time.TimeScales;
import java.util.Collections;
import java.util.Map;
import java.util.SortedSet;
import java.util.TreeSet;
/**
* Container for Solution INdependent EXchange (SINEX) files.
* @author Bryan Cazabonne
* @author Luc Maisonobe
* @since 13.0
*/
public class Sinex extends AbstractSinex {
/** Station data. */
private final Map<String, Station> stations;
/** Earth Orientation Parameters data. */
private final Map<AbsoluteDate, SinexEopEntry> eop;
/** Simple constructor.
* @param timeScales time scales
* @param creationDate SINEX file creation date
* @param startDate start time of the data used in the Sinex solution
* @param endDate end time of the data used in the Sinex solution
* @param stations station data
* @param eop Earth Orientation Parameters data
*/
public Sinex(final TimeScales timeScales,
final AbsoluteDate creationDate, final AbsoluteDate startDate, final AbsoluteDate endDate,
final Map<String, Station> stations, final Map<AbsoluteDate, SinexEopEntry> eop) {
super(timeScales, creationDate, startDate, endDate);
this.stations = stations;
this.eop = eop;
}
/** Get the parsed station data.
* @return unmodifiable view of parsed station data
*/
public Map<String, Station> getStations() {
return Collections.unmodifiableMap(stations);
}
/** Get the parsed EOP data.
* @param itrfVersion ITRF version corresponding to the entries
* @return loader for EOP data
*/
public EopHistoryLoader getEopLoader(final ITRFVersion itrfVersion) {
return (converter, history) -> {
// first set up all entries explicitly present in the parsed files
final SortedSet<SinexEopEntry> sorted = new TreeSet<>(new ChronologicalComparator());
sorted.addAll(eop.values());
// copy first and last entries according to files validity
sorted.add(sorted.first().toNewEpoch(getFileEpochStartTime()));
sorted.add(sorted.last().toNewEpoch(getFileEpochEndTime()));
if (sorted.size() < 4) {
// insert extra entries after first and before last to allow interpolation
sorted.add(sorted.first().toNewEpoch(getFileEpochStartTime().shiftedBy(1.0)));
sorted.add(sorted.last().toNewEpoch(getFileEpochEndTime().shiftedBy(-1.0)));
}
// convert to regular EOP history
sorted.forEach(e -> history.add(e.toEopEntry(converter, itrfVersion, getTimeScales().getUTC())));
};
}
}