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

Example 81 with DateComponents

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

the class SolarRadiationPressureTest method testLightingInterplanetary.

@Test
public void testLightingInterplanetary() throws OrekitException, ParseException {
    // Initialization
    AbsoluteDate date = new AbsoluteDate(new DateComponents(1970, 3, 21), new TimeComponents(13, 59, 27.816), TimeScalesFactory.getUTC());
    Orbit orbit = new KeplerianOrbit(1.0e11, 0.1, 0.2, 0.3, 0.4, 0.5, PositionAngle.TRUE, CelestialBodyFactory.getSolarSystemBarycenter().getInertiallyOrientedFrame(), date, Constants.JPL_SSD_SUN_GM);
    PVCoordinatesProvider sun = CelestialBodyFactory.getSun();
    SolarRadiationPressure srp = new SolarRadiationPressure(sun, Constants.SUN_RADIUS, (RadiationSensitive) new IsotropicRadiationClassicalConvention(50.0, 0.5, 0.5));
    Assert.assertFalse(srp.dependsOnPositionOnly());
    Vector3D position = orbit.getPVCoordinates().getPosition();
    Frame frame = orbit.getFrame();
    Assert.assertEquals(1.0, srp.getLightingRatio(position, frame, date), 1.0e-15);
    Assert.assertEquals(1.0, srp.getLightingRatio(new FieldVector3D<>(Decimal64Field.getInstance(), position), frame, new FieldAbsoluteDate<>(Decimal64Field.getInstance(), date)).getReal(), 1.0e-15);
}

Example 82 with DateComponents

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

the class SolarRadiationPressureTest method testGlobalStateJacobianIsotropicCnes.

@Test
public void testGlobalStateJacobianIsotropicCnes() throws OrekitException {
    // initialization
    AbsoluteDate date = new AbsoluteDate(new DateComponents(2003, 03, 01), new TimeComponents(13, 59, 27.816), TimeScalesFactory.getUTC());
    double i = FastMath.toRadians(98.7);
    double omega = FastMath.toRadians(93.0);
    double OMEGA = FastMath.toRadians(15.0 * 22.5);
    Orbit orbit = new KeplerianOrbit(7201009.7124401, 1e-3, i, omega, OMEGA, 0, PositionAngle.MEAN, FramesFactory.getEME2000(), date, Constants.EIGEN5C_EARTH_MU);
    OrbitType integrationType = OrbitType.CARTESIAN;
    double[][] tolerances = NumericalPropagator.tolerances(0.01, orbit, integrationType);
    NumericalPropagator propagator = new NumericalPropagator(new DormandPrince853Integrator(1.0e-3, 120, tolerances[0], tolerances[1]));
    propagator.setOrbitType(integrationType);
    SolarRadiationPressure forceModel = new SolarRadiationPressure(CelestialBodyFactory.getSun(), Constants.WGS84_EARTH_EQUATORIAL_RADIUS, new IsotropicRadiationCNES95Convention(2.5, 0.7, 0.2));
    propagator.addForceModel(forceModel);
    SpacecraftState state0 = new SpacecraftState(orbit);
    checkStateJacobian(propagator, state0, date.shiftedBy(3.5 * 3600.0), 1e3, tolerances[0], 3.0e-5);
}

Example 83 with DateComponents

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

the class SolarRadiationPressureTest method testLighting.

@Test
public void testLighting() throws OrekitException, ParseException {
    // Initialization
    AbsoluteDate date = new AbsoluteDate(new DateComponents(1970, 3, 21), new TimeComponents(13, 59, 27.816), TimeScalesFactory.getUTC());
    Orbit orbit = new EquinoctialOrbit(42164000, 10e-3, 10e-3, FastMath.tan(0.001745329) * FastMath.cos(2 * FastMath.PI / 3), FastMath.tan(0.001745329) * FastMath.sin(2 * FastMath.PI / 3), 0.1, PositionAngle.TRUE, FramesFactory.getEME2000(), date, mu);
    PVCoordinatesProvider sun = CelestialBodyFactory.getSun();
    OneAxisEllipsoid earth = new OneAxisEllipsoid(6378136.46, 1.0 / 298.25765, FramesFactory.getITRF(IERSConventions.IERS_2010, true));
    SolarRadiationPressure SRP = new SolarRadiationPressure(sun, earth.getEquatorialRadius(), (RadiationSensitive) new IsotropicRadiationCNES95Convention(50.0, 0.5, 0.5));
    double period = 2 * FastMath.PI * FastMath.sqrt(orbit.getA() * orbit.getA() * orbit.getA() / orbit.getMu());
    Assert.assertEquals(86164, period, 1);
    // creation of the propagator
    KeplerianPropagator k = new KeplerianPropagator(orbit);
    // intermediate variables
    AbsoluteDate currentDate;
    double changed = 1;
    int count = 0;
    for (int t = 1; t < 3 * period; t += 1000) {
        currentDate = date.shiftedBy(t);
        try {
            double ratio = SRP.getLightingRatio(k.propagate(currentDate).getPVCoordinates().getPosition(), FramesFactory.getEME2000(), currentDate);
            if (FastMath.floor(ratio) != changed) {
                changed = FastMath.floor(ratio);
                if (changed == 0) {
                    count++;
                }
            }
        } catch (OrekitException e) {
            e.printStackTrace();
        }
    }
    Assert.assertTrue(3 == count);
}

Example 84 with DateComponents

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

the class BulletinAFilesLoaderTest method testStartDate.

@Test
public void testStartDate() throws OrekitException {
    setRoot("bulletinA");
    SortedSet<EOPEntry> history = new TreeSet<EOPEntry>(new ChronologicalComparator());
    new BulletinAFilesLoader("bulletina-xxvi-\\d\\d\\d\\.txt").fillHistory(null, history);
    Assert.assertEquals(new AbsoluteDate(new DateComponents(DateComponents.MODIFIED_JULIAN_EPOCH, 56475), TimeScalesFactory.getUTC()), new EOPHistory(IERSConventions.IERS_2010, history, true).getStartDate());
}

Example 85 with DateComponents

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

the class HarmonicParametricAccelerationTest method setUp.

@Before
public void setUp() {
    try {
        Utils.setDataRoot("regular-data");
        final double a = 24396159;
        final double e = 0.72831215;
        final double i = FastMath.toRadians(7);
        final double omega = FastMath.toRadians(180);
        final double OMEGA = FastMath.toRadians(261);
        final double lv = 0;
        final AbsoluteDate initDate = new AbsoluteDate(new DateComponents(2004, 01, 01), new TimeComponents(23, 30, 00.000), TimeScalesFactory.getUTC());
        initialOrbit = new KeplerianOrbit(a, e, i, omega, OMEGA, lv, PositionAngle.TRUE, FramesFactory.getEME2000(), initDate, Constants.EIGEN5C_EARTH_MU);
    } catch (OrekitException oe) {
        Assert.fail(oe.getLocalizedMessage());
    }
}