Examples with EphemerisFile org.orekit.files.general.EphemerisFile used on opensource projects

Example 1 with EphemerisFile

use of org.orekit.files.general.EphemerisFile in project Orekit by CS-SI.

the class OEMWriterTest method testMultisatelliteFile.

@Test
public void testMultisatelliteFile() throws OrekitException, IOException {
    final String id1 = "ID1";
    final String id2 = "ID2";
    StandInEphemerisFile file = new StandInEphemerisFile();
    file.getSatellites().put(id1, new StandInSatelliteEphemeris(id1));
    file.getSatellites().put(id2, new StandInSatelliteEphemeris(id2));
    EphemerisFile ephemerisFile = (EphemerisFile) file;
    String tempOEMFilePath = tempFolder.newFile("TestOEMMultisatellite-1.oem").toString();
    OEMWriter writer1 = new OEMWriter();
    try {
        writer1.write(tempOEMFilePath, ephemerisFile);
        fail("Should have thrown OrekitIllegalArgumentException due to multiple satellites");
    } catch (OrekitIllegalArgumentException e) {
        assertEquals(OrekitMessages.EPHEMERIS_FILE_NO_MULTI_SUPPORT, e.getSpecifier());
    }
    tempOEMFilePath = tempFolder.newFile("TestOEMMultisatellite-2.oem").toString();
    OEMWriter writer2 = new OEMWriter(OEMWriter.DEFAULT_INTERPOLATION_METHOD, null, id1, null);
    writer2.write(tempOEMFilePath, ephemerisFile);
}

Example 2 with EphemerisFile

use of org.orekit.files.general.EphemerisFile in project Orekit by CS-SI.

the class OEMWriterTest method testNullFile.

@Test
public void testNullFile() throws OrekitException, IOException {
    final String ex = "/ccsds/OEMExample.txt";
    final InputStream inEntry = getClass().getResourceAsStream(ex);
    final OEMParser parser = new OEMParser().withMu(CelestialBodyFactory.getEarth().getGM()).withConventions(IERSConventions.IERS_2010);
    final OEMFile oemFile = parser.parse(inEntry, "OEMExample.txt");
    final EphemerisFile ephemerisFile = (EphemerisFile) oemFile;
    String originator = oemFile.getOriginator();
    String objectName = oemFile.getEphemeridesBlocks().get(0).getMetaData().getObjectName();
    String objectID = oemFile.getEphemeridesBlocks().get(0).getMetaData().getObjectID();
    String interpolationMethodString = oemFile.getEphemeridesBlocks().get(0).getInterpolationMethod();
    InterpolationMethod interpolationMethod = Enum.valueOf(InterpolationMethod.class, interpolationMethodString);
    OEMWriter writer = new OEMWriter(interpolationMethod, originator, objectID, objectName);
    try {
        writer.write((BufferedWriter) null, ephemerisFile);
        fail("an exception should have been thrown");
    } catch (OrekitIllegalArgumentException oiae) {
        assertEquals(OrekitMessages.NULL_ARGUMENT, oiae.getSpecifier());
        assertEquals("writer", oiae.getParts()[0]);
    }
}

Example 3 with EphemerisFile

use of org.orekit.files.general.EphemerisFile in project Orekit by CS-SI.

the class OEMWriterTest method testUnisatelliteFileWithDefault.

@Test
public void testUnisatelliteFileWithDefault() throws OrekitException, IOException {
    final String ex = "/ccsds/OEMExample.txt";
    final InputStream inEntry = getClass().getResourceAsStream(ex);
    final OEMParser parser = new OEMParser().withMu(CelestialBodyFactory.getEarth().getGM()).withConventions(IERSConventions.IERS_2010);
    final OEMFile oemFile = parser.parse(inEntry, "OEMExample.txt");
    final EphemerisFile ephemerisFile = (EphemerisFile) oemFile;
    String tempOEMFilePath = tempFolder.newFile("TestOEMUnisatelliteWithDefault.oem").toString();
    OEMWriter writer = new OEMWriter();
    writer.write(tempOEMFilePath, ephemerisFile);
    final OEMFile generatedOemFile = parser.parse(tempOEMFilePath);
    assertEquals(oemFile.getEphemeridesBlocks().get(0).getMetaData().getObjectID(), generatedOemFile.getEphemeridesBlocks().get(0).getMetaData().getObjectID());
}

Example 4 with EphemerisFile

use of org.orekit.files.general.EphemerisFile in project Orekit by CS-SI.

the class OEMWriter method write.

/**
 * {@inheritDoc}
 */
@Override
public void write(final Appendable writer, final EphemerisFile ephemerisFile) throws OrekitException, IOException {
    if (writer == null) {
        throw new OrekitIllegalArgumentException(OrekitMessages.NULL_ARGUMENT, "writer");
    }
    if (ephemerisFile == null) {
        return;
    }
    final String idToProcess;
    if (spaceObjectId != null) {
        if (ephemerisFile.getSatellites().containsKey(spaceObjectId)) {
            idToProcess = spaceObjectId;
        } else {
            throw new OrekitIllegalArgumentException(OrekitMessages.VALUE_NOT_FOUND, spaceObjectId, "ephemerisFile");
        }
    } else if (ephemerisFile.getSatellites().keySet().size() == 1) {
        idToProcess = ephemerisFile.getSatellites().keySet().iterator().next();
    } else {
        throw new OrekitIllegalArgumentException(OrekitMessages.EPHEMERIS_FILE_NO_MULTI_SUPPORT);
    }
    // Get satellite and ephemeris segments to output.
    final EphemerisFile.SatelliteEphemeris satEphem = ephemerisFile.getSatellites().get(idToProcess);
    final List<? extends EphemerisSegment> segments = satEphem.getSegments();
    if (segments.isEmpty()) {
        // no data -> no output
        return;
    }
    final EphemerisSegment firstSegment = segments.get(0);
    final String objectName = this.spaceObjectName == null ? idToProcess : this.spaceObjectName;
    // Only one time scale per OEM file, see Section 5.2.4.5
    final TimeScale timeScale = firstSegment.getTimeScale();
    // metadata that is constant for the whole OEM file
    final Map<Keyword, String> metadata = new LinkedHashMap<>();
    metadata.put(Keyword.TIME_SYSTEM, firstSegment.getTimeScaleString());
    metadata.put(Keyword.ORIGINATOR, this.originator);
    // Only one object in an OEM file, see Section 2.1
    metadata.put(Keyword.OBJECT_ID, idToProcess);
    metadata.put(Keyword.OBJECT_NAME, objectName);
    metadata.put(Keyword.INTERPOLATION, this.interpolationMethod.toString());
    final StreamingOemWriter oemWriter = new StreamingOemWriter(writer, timeScale, metadata);
    oemWriter.writeHeader();
    for (final EphemerisSegment segment : segments) {
        // segment specific metadata
        metadata.clear();
        metadata.put(Keyword.CENTER_NAME, segment.getFrameCenterString());
        metadata.put(Keyword.REF_FRAME, segment.getFrameString());
        metadata.put(Keyword.START_TIME, segment.getStart().toString(timeScale));
        metadata.put(Keyword.STOP_TIME, segment.getStop().toString(timeScale));
        metadata.put(Keyword.INTERPOLATION_DEGREE, String.valueOf(segment.getInterpolationSamples() - 1));
        final Segment segmentWriter = oemWriter.newSegment(null, metadata);
        segmentWriter.writeMetadata();
        for (final TimeStampedPVCoordinates coordinates : segment.getCoordinates()) {
            segmentWriter.writeEphemerisLine(coordinates);
        }
    }
}

Example 5 with EphemerisFile

use of org.orekit.files.general.EphemerisFile in project Orekit by CS-SI.

the class OEMWriterTest method testUnfoundSpaceId.

@Test
public void testUnfoundSpaceId() throws OrekitException, IOException {
    final String ex = "/ccsds/OEMExample.txt";
    final InputStream inEntry = getClass().getResourceAsStream(ex);
    final OEMParser parser = new OEMParser().withMu(CelestialBodyFactory.getEarth().getGM()).withConventions(IERSConventions.IERS_2010);
    final OEMFile oemFile = parser.parse(inEntry, "OEMExample.txt");
    final EphemerisFile ephemerisFile = (EphemerisFile) oemFile;
    String badObjectId = "12345";
    String interpolationMethodString = oemFile.getEphemeridesBlocks().get(0).getInterpolationMethod();
    InterpolationMethod interpolationMethod = Enum.valueOf(InterpolationMethod.class, interpolationMethodString);
    String tempOEMFilePath = tempFolder.newFile("TestOEMUnfoundSpaceId.oem").toString();
    OEMWriter writer = new OEMWriter(interpolationMethod, null, badObjectId, null);
    try {
        writer.write(tempOEMFilePath, ephemerisFile);
        fail("an exception should have been thrown");
    } catch (OrekitIllegalArgumentException oiae) {
        assertEquals(OrekitMessages.VALUE_NOT_FOUND, oiae.getSpecifier());
        assertEquals(badObjectId, oiae.getParts()[0]);
    }
}