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

Example 11 with AbsoluteDate

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

the class MarshallSolarActivityFutureEstimationTest method testWithPropagator.

/**
 * Check integration error is small when integrating the same equations over the same
 * interval.
 *
 * @throws OrekitException on error.
 */
@Test
public void testWithPropagator() throws OrekitException {
    CelestialBody sun = CelestialBodyFactory.getSun();
    final Frame eci = FramesFactory.getGCRF();
    final Frame ecef = FramesFactory.getITRF(IERSConventions.IERS_2010, true);
    AbsoluteDate date = new AbsoluteDate(2004, 1, 1, utc);
    OneAxisEllipsoid earth = new OneAxisEllipsoid(Constants.WGS84_EARTH_EQUATORIAL_RADIUS, Constants.WGS84_EARTH_FLATTENING, ecef);
    Orbit orbit = new KeplerianOrbit(6378137 + 400e3, 1e-3, FastMath.toRadians(50), 0, 0, 0, PositionAngle.TRUE, eci, date, Constants.EIGEN5C_EARTH_MU);
    final SpacecraftState ic = new SpacecraftState(orbit);
    final AbsoluteDate end = date.shiftedBy(5 * Constants.JULIAN_DAY);
    final AbsoluteDate resetDate = date.shiftedBy(0.8 * Constants.JULIAN_DAY + 0.1);
    final SpacecraftState[] lastState = new SpacecraftState[1];
    final OrekitStepHandler stepSaver = (interpolator, isLast) -> {
        final AbsoluteDate start = interpolator.getPreviousState().getDate();
        if (start.compareTo(resetDate) < 0) {
            lastState[0] = interpolator.getPreviousState();
        }
    };
    // propagate with state rest to take slightly different path
    NumericalPropagator propagator = getNumericalPropagator(sun, earth, ic);
    propagator.setMasterMode(stepSaver);
    propagator.propagate(resetDate);
    propagator.resetInitialState(lastState[0]);
    propagator.setSlaveMode();
    final SpacecraftState actual = propagator.propagate(end);
    // propagate straight through
    propagator = getNumericalPropagator(sun, earth, ic);
    propagator.resetInitialState(ic);
    propagator.setSlaveMode();
    final SpacecraftState expected = propagator.propagate(end);
    assertThat(actual.getPVCoordinates(), pvCloseTo(expected.getPVCoordinates(), 1.0));
}

Example 12 with AbsoluteDate

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

the class MarshallSolarActivityFutureEstimationTest method testMinDate.

@Test
public void testMinDate() throws OrekitException {
    MarshallSolarActivityFutureEstimation msafe = loadMsafe(MarshallSolarActivityFutureEstimation.StrengthLevel.WEAK);
    Assert.assertEquals(new AbsoluteDate("2010-05-01", utc), msafe.getMinDate());
    Assert.assertEquals(78.1, msafe.getMeanFlux(msafe.getMinDate()), 1.0e-14);
}

Example 13 with AbsoluteDate

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

the class MarshallSolarActivityFutureEstimationTest method testFluxStrong.

@Test
public void testFluxStrong() throws OrekitException {
    MarshallSolarActivityFutureEstimation msafe = loadMsafe(MarshallSolarActivityFutureEstimation.StrengthLevel.STRONG);
    Assert.assertEquals(94.2, msafe.getMeanFlux(new AbsoluteDate("2010-10-01", utc)), 1.0e-10);
    Assert.assertEquals(96.6, msafe.getMeanFlux(new AbsoluteDate("2010-10-16T12:00:00", utc)), 1.0e-10);
    Assert.assertEquals(99.0, msafe.getMeanFlux(new AbsoluteDate("2010-11-01", utc)), 1.0e-10);
    Assert.assertEquals(msafe.getInstantFlux(new AbsoluteDate("2010-11-01", utc)), msafe.getMeanFlux(new AbsoluteDate("2010-11-01", utc)), 1.0e-10);
    Assert.assertEquals(MarshallSolarActivityFutureEstimation.StrengthLevel.STRONG, msafe.getStrengthLevel());
}

Example 14 with AbsoluteDate

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

the class MarshallSolarActivityFutureEstimationTest method testKpStrong.

@Test
public void testKpStrong() throws OrekitException {
    MarshallSolarActivityFutureEstimation msafe = loadMsafe(MarshallSolarActivityFutureEstimation.StrengthLevel.STRONG);
    Assert.assertEquals(2 + 1.0 / 3.0, msafe.get24HoursKp(new AbsoluteDate("2010-10-01", utc)), 0.2);
    Assert.assertEquals(3.0, msafe.get24HoursKp(new AbsoluteDate("2011-05-01", utc)), 0.1);
    // this one should get exactly to an element of the AP_ARRAY: ap = 7.0
    Assert.assertEquals(2.0, msafe.get24HoursKp(new AbsoluteDate("2010-08-01", utc)), 0.3);
    Assert.assertEquals(msafe.getThreeHourlyKP(new AbsoluteDate("2010-08-01", utc)), msafe.get24HoursKp(new AbsoluteDate("2010-08-01", utc)), 1.0e-14);
}

Example 15 with AbsoluteDate

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

the class MarshallSolarActivityFutureEstimationTest method testFutureOutOfRange.

@Test(expected = OrekitException.class)
public void testFutureOutOfRange() throws OrekitException {
    MarshallSolarActivityFutureEstimation msafe = loadMsafe(MarshallSolarActivityFutureEstimation.StrengthLevel.WEAK);
    msafe.get24HoursKp(new AbsoluteDate("2060-10-01", utc));
}