Examples with DateTimeComponents org.orekit.time.DateTimeComponents used on opensource projects

Example 1 with DateTimeComponents

use of org.orekit.time.DateTimeComponents in project Orekit by CS-SI.

the class NRLMSISE00 method getDensity.

/**
 * {@inheritDoc}
 */
@Override
public double getDensity(final AbsoluteDate date, final Vector3D position, final Frame frame) throws OrekitException {
    // check if data are available :
    if ((date.compareTo(inputParams.getMaxDate()) > 0) || (date.compareTo(inputParams.getMinDate()) < 0)) {
        throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE, date, inputParams.getMinDate(), inputParams.getMaxDate());
    }
    // compute day number in current year and the seconds within the day
    final DateTimeComponents dtc = date.getComponents(TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true));
    final int doy = dtc.getDate().getDayOfYear();
    final double sec = dtc.getTime().getSecondsInLocalDay();
    // compute geodetic position (km and °)
    final GeodeticPoint inBody = earth.transform(position, frame, date);
    final double alt = inBody.getAltitude() / 1000.;
    final double lon = FastMath.toDegrees(inBody.getLongitude());
    final double lat = FastMath.toDegrees(inBody.getLatitude());
    // compute local solar time
    final double lst = localSolarTime(date, position, frame);
    // get solar activity data and compute
    final Output out = new Output(doy, sec, lat, lon, lst, inputParams.getAverageFlux(date), inputParams.getDailyFlux(date), inputParams.getAp(date));
    out.gtd7d(alt);
    // return the local density
    return out.getDensity(TOTAL_MASS);
}

Example 2 with DateTimeComponents

use of org.orekit.time.DateTimeComponents in project Orekit by CS-SI.

the class DEFile method write.

private void write() throws IOException {
    if (!selected.isEmpty()) {
        if (outName != null) {
            try (OutputStream out = new FileOutputStream(outName)) {
                // patch header epoch
                System.arraycopy(selected.get(0), DATA_START_RANGE_OFFSET, first, HEADER_START_EPOCH_OFFSET, 8);
                System.arraycopy(selected.get(selected.size() - 1), DATE_END_RANGE_OFFSET, first, HEADER_END_EPOCH_OFFSET, 8);
                // patch header labels
                final AbsoluteDate start = extractDate(first, HEADER_START_EPOCH_OFFSET, bigEndian);
                final DateTimeComponents sc = start.getComponents(timeScale);
                final AbsoluteDate end = extractDate(first, HEADER_END_EPOCH_OFFSET, bigEndian);
                final DateTimeComponents ec = end.getComponents(timeScale);
                System.arraycopy(padString("THIS IS NOT A GENUINE JPL DE FILE," + " THIS IS AN EXCERPT WITH A LIMITED TIME RANGE", HEADER_LABEL_SIZE), 0, first, HEADER_LABEL_1_OFFSET, HEADER_LABEL_SIZE);
                System.arraycopy(padString(String.format(Locale.US, "Start Epoch: JED=  %.1f %4d-%s-%02d %02d:%02d:%02.0f", (start.durationFrom(AbsoluteDate.JULIAN_EPOCH)) / Constants.JULIAN_DAY, sc.getDate().getYear(), sc.getDate().getMonthEnum().getUpperCaseAbbreviation(), sc.getDate().getDay(), sc.getTime().getHour(), sc.getTime().getMinute(), sc.getTime().getSecond()), HEADER_LABEL_SIZE), 0, first, HEADER_LABEL_2_OFFSET, HEADER_LABEL_SIZE);
                System.arraycopy(padString(String.format(Locale.US, "Final Epoch: JED=  %.1f %4d-%s-%02d %02d:%02d:%02.0f", (end.durationFrom(AbsoluteDate.JULIAN_EPOCH)) / Constants.JULIAN_DAY, ec.getDate().getYear(), ec.getDate().getMonthEnum().getUpperCaseAbbreviation(), ec.getDate().getDay(), ec.getTime().getHour(), ec.getTime().getMinute(), ec.getTime().getSecond()), HEADER_LABEL_SIZE), 0, first, HEADER_LABEL_3_OFFSET, HEADER_LABEL_SIZE);
                // write patched header
                out.write(first);
                out.write(second);
                // write selected data
                for (byte[] data : selected) {
                    out.write(data);
                }
            }
        }
    }
}

Example 3 with DateTimeComponents

use of org.orekit.time.DateTimeComponents in project Orekit by CS-SI.

the class KlobucharModelTest method compareExpectedValue.

@Test
public void compareExpectedValue() throws IllegalArgumentException, OrekitException {
    final double latitude = FastMath.toRadians(40);
    final double longitude = FastMath.toRadians(-100);
    final double altitude = 0.;
    final double elevation = 20.;
    final double azimuth = 210.;
    final AbsoluteDate date = new AbsoluteDate(new DateTimeComponents(2000, 1, 1, 20, 45, 0), utc);
    final GeodeticPoint geo = new GeodeticPoint(latitude, longitude, altitude);
    final double delayMeters = model.pathDelay(date, geo, FastMath.toRadians(elevation), FastMath.toRadians(azimuth));
    Assert.assertEquals(23.784, delayMeters, 0.001);
}

Example 4 with DateTimeComponents

use of org.orekit.time.DateTimeComponents in project Orekit by CS-SI.

the class NRLMSISE00 method getDensity.

/**
 * {@inheritDoc}
 */
@Override
public <T extends RealFieldElement<T>> T getDensity(final FieldAbsoluteDate<T> date, final FieldVector3D<T> position, final Frame frame) throws OrekitException {
    // check if data are available :
    final AbsoluteDate dateD = date.toAbsoluteDate();
    if ((dateD.compareTo(inputParams.getMaxDate()) > 0) || (dateD.compareTo(inputParams.getMinDate()) < 0)) {
        throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE, dateD, inputParams.getMinDate(), inputParams.getMaxDate());
    }
    // compute day number in current year and the seconds within the day
    final TimeScale ut1 = TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true);
    final DateTimeComponents dtc = dateD.getComponents(ut1);
    final int doy = dtc.getDate().getDayOfYear();
    final T sec = date.durationFrom(new AbsoluteDate(dtc.getDate(), TimeComponents.H00, ut1));
    // compute geodetic position (km and °)
    final FieldGeodeticPoint<T> inBody = earth.transform(position, frame, date);
    final T alt = inBody.getAltitude().divide(1000.);
    final T lon = inBody.getLongitude().multiply(180.0 / FastMath.PI);
    final T lat = inBody.getLatitude().multiply(180.0 / FastMath.PI);
    // compute local solar time
    final T lst = localSolarTime(dateD, position, frame);
    // get solar activity data and compute
    final FieldOutput<T> out = new FieldOutput<>(doy, sec, lat, lon, lst, inputParams.getAverageFlux(dateD), inputParams.getDailyFlux(dateD), inputParams.getAp(dateD));
    out.gtd7d(alt);
    // return the local density
    return out.getDensity(TOTAL_MASS);
}

Example 5 with DateTimeComponents

use of org.orekit.time.DateTimeComponents in project Orekit by CS-SI.

the class StreamingOemWriter method dateToString.

/**
 * Convert a date to a string with more precision.
 *
 * @param components to convert to a String.
 * @return the String form of {@code date} with at least 9 digits of precision.
 */
static String dateToString(final DateTimeComponents components) {
    final TimeComponents time = components.getTime();
    final int hour = time.getHour();
    final int minute = time.getMinute();
    final double second = time.getSecond();
    // Decimal formatting classes could be static final if they were thread safe.
    final DecimalFormatSymbols locale = new DecimalFormatSymbols(STANDARDIZED_LOCALE);
    final DecimalFormat twoDigits = new DecimalFormat("00", locale);
    final DecimalFormat precise = new DecimalFormat("00.0########", locale);
    return components.getDate().toString() + "T" + twoDigits.format(hour) + ":" + twoDigits.format(minute) + ":" + precise.format(second);
}