ODMFile.java
/* Copyright 2002-2013 CS Systèmes d'Information
* Licensed to CS Systèmes d'Information (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;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.orekit.errors.OrekitException;
import org.orekit.errors.OrekitMessages;
import org.orekit.files.general.OrbitFile;
import org.orekit.files.general.SatelliteTimeCoordinate;
import org.orekit.time.AbsoluteDate;
import org.orekit.utils.IERSConventions;
/**
* The ODMFile (Orbit Data Message) class represents any of the three orbit messages used by the CCSDS,
* i.e. the Orbit Parameter Message (OPM), the Mean-Elements Message (OMM) and the Orbit Ephemeris Message (OEM).
* It contains the information of the message's header and configuration data (set in the parser).
* @author sports
* @since 6.1
*/
public abstract class ODMFile implements OrbitFile {
/** CCSDS Format version. */
private double formatVersion;
/** Header comments. The list contains a string for each line of comment. */
private List<String> headerComment;
/** File creation date and time in UTC. */
private AbsoluteDate creationDate;
/** Creating agency or operator. */
private String originator;
/** Gravitational coefficient set by the user in the parser. */
private double muSet;
/** Gravitational coefficient parsed in the ODM File. */
private double muParsed;
/** Gravitational coefficient created from the knowledge of the central body. */
private double muCreated;
/** IERS conventions used. */
private IERSConventions conventions;
/** Final gravitational coefficient (used for the public methods that need such a parameter, ex: generateCartesianOrbit).
* In order of decreasing priority, finalMU is equal to: the coefficient parsed in the file, the coefficient set by the
* user with the parser's method setMu, the coefficient created from the knowledge of the central body.
*/
private double muUsed;
/** Initial Date for MET or MRT time systems. */
private AbsoluteDate missionReferenceDate;
/** ODMFile constructor. */
public ODMFile() {
muSet = Double.NaN;
muParsed = Double.NaN;
muCreated = Double.NaN;
muUsed = Double.NaN;
}
/**
* Get the gravitational coefficient set by the user.
* @return the coefficient
*/
public double getMuSet() {
return muSet;
}
/**
* Set the gravitational coefficient set by the user.
* @param muSet the coefficient to be set
*/
void setMuSet(final double muSet) {
this.muSet = muSet;
}
/**
* Get the gravitational coefficient parsed in the ODM File.
* @return the coefficient
*/
public double getMuParsed() {
return muParsed;
}
/**
* Set the gravitational coefficient parsed in the ODM File.
* @param muParsed the coefficient to be set
*/
void setMuParsed(final double muParsed) {
this.muParsed = muParsed;
}
/**
* Get the gravitational coefficient created from the knowledge of the central body.
* @return the coefficient
*/
public double getMuCreated() {
return muCreated;
}
/**
* Set the gravitational coefficient created from the knowledge of the central body.
* @param muCreated the coefficient to be set
*/
void setMuCreated(final double muCreated) {
this.muCreated = muCreated;
}
/**
* Get the used gravitational coefficient.
* @return the coefficient
*/
public double getMuUsed() {
return muUsed;
}
/**
* Set the gravitational coefficient created from the knowledge of the central body.
* In order of decreasing priority, finalMU is set equal to:
* <ol>
* <li>the coefficient parsed in the file,</li>
* <li>the coefficient set by the user with the parser's method setMu,</li>
* <li>the coefficient created from the knowledge of the central body.</li>
* </ol>
* @throws OrekitException if no gravitational coefficient can be found
*/
protected void setMuUsed() throws OrekitException {
if (!Double.isNaN(muParsed)) {
muUsed = muParsed;
} else if (!Double.isNaN(muSet)) {
muUsed = muSet;
} else if (!Double.isNaN(muCreated)) {
muUsed = muCreated;
} else {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_GM);
}
}
/** Get IERS conventions.
* @return conventions IERS conventions
* @exception OrekitException if no IERS conventions have been set
*/
public IERSConventions getConventions() throws OrekitException {
if (conventions != null) {
return conventions;
} else {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
}
/** Set IERS conventions.
* @param conventions IERS conventions to be set
*/
void setConventions(final IERSConventions conventions) {
this.conventions = conventions;
}
/** Get reference date for Mission Elapsed Time and Mission Relative Time time systems.
* @return the reference date
*/
public AbsoluteDate getMissionReferenceDate() {
return missionReferenceDate;
}
/** Set reference date for Mission Elapsed Time and Mission Relative Time time systems.
* @param missionReferenceDate reference date for Mission Elapsed Time and Mission Relative Time time systems.
*/
void setMissionReferenceDate(final AbsoluteDate missionReferenceDate) {
this.missionReferenceDate = missionReferenceDate;
}
/** Get the CCSDS ODM (OPM, OMM or OEM) format version.
* @return format version
*/
public double getFormatVersion() {
return formatVersion;
}
/** Set the CCSDS ODM (OPM, OMM or OEM) format version.
* @param formatVersion the format version to be set
*/
void setFormatVersion(final double formatVersion) {
this.formatVersion = formatVersion;
}
/** Get the header comment.
* @return header comment
*/
public List<String> getHeaderComment() {
return headerComment;
}
/** Set the header comment.
* @param headerComment header comment
*/
void setHeaderComment(final List<String> headerComment) {
this.headerComment = new ArrayList<String>(headerComment);
}
/** Get the file creation date and time in UTC.
* @return the file creation date and time in UTC.
*/
public AbsoluteDate getCreationDate() {
return creationDate;
}
/** Set the file creation date and time in UTC.
* @param creationDate the creation date to be set
*/
void setCreationDate(final AbsoluteDate creationDate) {
this.creationDate = creationDate;
}
/** Get the file originator.
* @return originator the file originator.
*/
public String getOriginator() {
return originator;
}
/** Set the file originator.
* @param originator the originator to be set
*/
void setOriginator(final String originator) {
this.originator = originator;
}
/**
* Not supported by CCSDS orbit messages.
* @return always throws an {@link UnsupportedOperationException}
* @throws UnsupportedOperationException always
*/
@Override
public double getEpochInterval() {
throw new UnsupportedOperationException();
}
/**
* Not supported by CCSDS orbit messages.
* @return always throws an {@link UnsupportedOperationException}
* @throws UnsupportedOperationException always
*/
@Override
public int getNumberOfEpochs() {
throw new UnsupportedOperationException();
}
/** {@inheritDoc} */
@Override
public boolean containsSatellite(final String satId) {
return getSatellite(satId) != null;
}
/** {@inheritDoc} */
@Override
public List<SatelliteTimeCoordinate> getSatelliteCoordinates(final String satId) {
return Collections.emptyList();
}
}