Station.java
/* Copyright 2002-2022 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.files.sinex;
import java.util.HashMap;
import java.util.Map;
import org.hipparchus.geometry.euclidean.threed.Vector3D;
import org.orekit.errors.OrekitException;
import org.orekit.errors.OrekitMessages;
import org.orekit.time.AbsoluteDate;
import org.orekit.utils.TimeSpanMap;
/**
* Station model.
* <p>
* Since Orekit 11.1, this class handles multiple site antenna
* eccentricity. The {@link #getEccentricities()} method
* provides the last known eccentricity values.
* The {@link #getEccentricities(AbsoluteDate)} method can be
* used to access the site antenna eccentricity values for a
* given epoch.
* </p>
* @author Bryan Cazabonne
* @since 10.3
*/
public class Station {
/** Site code. */
private String siteCode;
/** DOMES number. */
private String domes;
/** Start of validity. */
private AbsoluteDate validFrom;
/** End of validity. */
private AbsoluteDate validUntil;
/** Eccentricity reference system. */
private ReferenceSystem eccRefSystem;
/** Latest site antenna eccentricities (m). */
private Vector3D eccentricities;
/** TimeSpanMap of site antenna eccentricities. */
private TimeSpanMap<Vector3D> eccentricitiesTimeSpanMap;
/** Station position. */
private Vector3D position;
/** Station velocity. */
private Vector3D velocity;
/** Coordinates reference epoch. */
private AbsoluteDate epoch;
/**
* Constructor.
*/
public Station() {
this.eccentricities = Vector3D.ZERO;
this.eccentricitiesTimeSpanMap = new TimeSpanMap<>(null);
this.position = Vector3D.ZERO;
this.velocity = Vector3D.ZERO;
}
/**
* Get the site code (station identifier).
* @return the site code
*/
public String getSiteCode() {
return siteCode;
}
/**
* Set the site code (station identifier).
* @param siteCode the site code to set
*/
public void setSiteCode(final String siteCode) {
this.siteCode = siteCode;
}
/**
* Get the site DOMES number.
* @return the DOMES number
*/
public String getDomes() {
return domes;
}
/**
* Set the DOMES number.
* @param domes the DOMES number to set
*/
public void setDomes(final String domes) {
this.domes = domes;
}
/**
* Get start of validity.
* @return start of validity
*/
public AbsoluteDate getValidFrom() {
if (validFrom == null) {
validFrom = eccentricitiesTimeSpanMap.getFirstTransition().getDate();
}
return validFrom;
}
/**
* Set the start of validity.
* @param validFrom the start of validity to set
*/
public void setValidFrom(final AbsoluteDate validFrom) {
this.validFrom = validFrom;
}
/**
* Get end of validity.
* @return end of validity
*/
public AbsoluteDate getValidUntil() {
if (validUntil == null) {
validUntil = eccentricitiesTimeSpanMap.getLastTransition().getDate();
}
return validUntil;
}
/**
* Set the end of validity.
* @param validUntil the end of validity to set
*/
public void setValidUntil(final AbsoluteDate validUntil) {
this.validUntil = validUntil;
}
/**
* Get the reference system used to define the eccentricity vector (local or cartesian).
* @return the reference system used to define the eccentricity vector
*/
public ReferenceSystem getEccRefSystem() {
return eccRefSystem;
}
/**
* Set the reference system used to define the eccentricity vector (local or cartesian).
* @param eccRefSystem the reference system used to define the eccentricity vector
*/
public void setEccRefSystem(final ReferenceSystem eccRefSystem) {
this.eccRefSystem = eccRefSystem;
}
/**
* Get the last known station antenna eccentricities.
* <p>
* Vector convention: X-Y-Z or UP-NORTH-EAST.
* See {@link #getEccRefSystem()} method.
* </p>
* @return station antenna eccentricities (m)
*/
public Vector3D getEccentricities() {
return eccentricities;
}
/**
* Set the last known station antenna eccentricities.
* @param eccentricities the eccenticities to set (m)
*/
public void setEccentricities(final Vector3D eccentricities) {
this.eccentricities = eccentricities;
}
/**
* Get the station antenna eccentricities for the given epoch.
* <p>
* Vector convention: X-Y-Z or UP-NORTH-EAST.
* See {@link #getEccRefSystem()} method.
* <p>
* If there is no eccentricity values for the given epoch, an
* exception is thrown. It is possible to access the last known
* values using the {@link #getEccentricities()} method.
* @param date epoch
* @return station antenna eccentricities (m)
* @since 11.1
*/
public Vector3D getEccentricities(final AbsoluteDate date) {
final Vector3D eccAtEpoch = eccentricitiesTimeSpanMap.get(date);
// If the entry is null, there is no valid eccentricity values for the input epoch
if (eccAtEpoch == null) {
// Throw an exception
throw new OrekitException(OrekitMessages.NO_STATION_ECCENTRICITY_FOR_EPOCH, date, getValidFrom(), getValidUntil());
}
return eccAtEpoch;
}
/**
* Get the TimeSpanMap of site antenna eccentricities.
* @return the TimeSpanMap of site antenna eccentricities
* @since 11.1
*/
public TimeSpanMap<Vector3D> getEccentricitiesTimeSpanMap() {
return eccentricitiesTimeSpanMap;
}
/** Add a station eccentricity vector entry valid before a limit date.<br>
* Using <code>addStationEccentricitiesValidBefore(entry, t)</code> will make <code>entry</code>
* valid in ]-∞, t[ (note the open bracket).
* @param entry station eccentricity vector entry
* @param latestValidityDate date before which the entry is valid
* (must be different from <b>all</b> dates already used for transitions)
* @since 11.1
*/
public void addStationEccentricitiesValidBefore(final Vector3D entry, final AbsoluteDate latestValidityDate) {
eccentricitiesTimeSpanMap.addValidBefore(entry, latestValidityDate, false);
}
/** Add a station eccentricity vector entry valid after a limit date.<br>
* Using <code>addStationEccentricitiesValidAfter(entry, t)</code> will make <code>entry</code>
* valid in [t, +∞[ (note the closed bracket).
* @param entry station eccentricity vector entry
* @param earliestValidityDate date after which the entry is valid
* (must be different from <b>all</b> dates already used for transitions)
* @since 11.1
*/
public void addStationEccentricitiesValidAfter(final Vector3D entry, final AbsoluteDate earliestValidityDate) {
eccentricitiesTimeSpanMap.addValidAfter(entry, earliestValidityDate, false);
}
/**
* Get the station position.
* @return the station position (m)
*/
public Vector3D getPosition() {
return position;
}
/**
* Set the station position.
* @param position the position to set
*/
public void setPosition(final Vector3D position) {
this.position = position;
}
/**
* Get the station velocity.
* @return the station velocity (m/s)
*/
public Vector3D getVelocity() {
return velocity;
}
/**
* Set the station velocity.
* @param velocity the velocity to set
*/
public void setVelocity(final Vector3D velocity) {
this.velocity = velocity;
}
/**
* Get the coordinates reference epoch.
* @return the coordinates reference epoch
*/
public AbsoluteDate getEpoch() {
return epoch;
}
/**
* Set the coordinates reference epoch.
* @param epoch the epoch to set
*/
public void setEpoch(final AbsoluteDate epoch) {
this.epoch = epoch;
}
/** Eccentricity reference system. */
public enum ReferenceSystem {
/** Local reference system Up, North, East. */
UNE("UNE"),
/** Cartesian reference system X, Y, Z. */
XYZ("XYZ");
/** Codes map. */
private static final Map<String, ReferenceSystem> CODES_MAP = new HashMap<>();
static {
for (final ReferenceSystem type : values()) {
CODES_MAP.put(type.getName(), type);
}
}
/** Name used to define the reference system in SINEX file. */
private final String name;
/**
* Constructor.
* @param name name used to define the reference system in SINEX file
*/
ReferenceSystem(final String name) {
this.name = name;
}
/**
* Get the name used to define the reference system in SINEX file.
* @return the name
*/
public String getName() {
return name;
}
/**
* Get the eccentricity reference system corresponding to the given value.
* @param value given value
* @return the corresponding eccentricity reference system
*/
public static ReferenceSystem getEccRefSystem(final String value) {
return CODES_MAP.get(value);
}
}
}