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

Example 26 with TimeScale

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

the class SolidTidesFieldTest method testDeltaCnmSnm.

@Test
public void testDeltaCnmSnm() throws OrekitException {
    NormalizedSphericalHarmonicsProvider gravityField = GravityFieldFactory.getConstantNormalizedProvider(8, 8);
    UT1Scale ut1 = TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true);
    TimeScale utc = TimeScalesFactory.getUTC();
    AbsoluteDate date = new AbsoluteDate(2003, 5, 6, 13, 43, 32.125, utc);
    SolidTidesField tidesField = new SolidTidesField(IERSConventions.IERS_2010.getLoveNumbers(), IERSConventions.IERS_2010.getTideFrequencyDependenceFunction(ut1), IERSConventions.IERS_2010.getPermanentTide(), null, FramesFactory.getITRF(IERSConventions.IERS_2010, true), gravityField.getAe(), gravityField.getMu(), TideSystem.TIDE_FREE, CelestialBodyFactory.getSun(), CelestialBodyFactory.getMoon());
    NormalizedSphericalHarmonics harmonics = tidesField.onDate(date);
    double[][] refDeltaCnm = new double[][] { { 0.0, 0.0, 0.0, 0.0, 0.0 }, { 0.0, 0.0, 0.0, 0.0, 0.0 }, { -2.6732289327355114E-9, 4.9078992447259636E-9, 3.5894110538262888E-9, 0.0, 0.0 }, // { -2.6598001259383122E-9,   4.907899244804072E-9,   3.5894110542365972E-9,         0.0 ,                 0.0  },
    { -1.290639603871307E-11, -9.287425756410472E-14, 8.356574033404024E-12, -2.2644465207860626E-12, 0.0 }, { 7.888138856951149E-12, -1.4422209452877158E-11, -6.815519349970944E-12, 0.0, 0.0 } };
    double[][] refDeltaSnm = new double[][] { { 0.0, 0.0, 0.0, 0.0, 0.0 }, { 0.0, 0.0, 0.0, 0.0, 0.0 }, { 0.0, 1.599927449004677E-9, 2.1815888169727694E-9, 0.0, 0.0 }, { 0.0, -4.6129961143785774E-14, 1.8097527720906976E-11, 1.633889224766215E-11, 0.0 }, { 0.0, -4.897228975221076E-12, -4.1034042689652575E-12, 0.0, 0.0 } };
    for (int n = 0; n < refDeltaCnm.length; ++n) {
        double threshold = (n == 2) ? 1.3e-17 : 1.0e-24;
        for (int m = 0; m <= n; ++m) {
            Assert.assertEquals(refDeltaCnm[n][m], harmonics.getNormalizedCnm(n, m), threshold);
            Assert.assertEquals(refDeltaSnm[n][m], harmonics.getNormalizedSnm(n, m), threshold);
        }
    }
}

Example 27 with TimeScale

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

the class SolidTidesTest method testTideEffect1996.

@Test
public void testTideEffect1996() throws OrekitException {
    Frame eme2000 = FramesFactory.getEME2000();
    TimeScale utc = TimeScalesFactory.getUTC();
    AbsoluteDate date = new AbsoluteDate(2003, 07, 01, 13, 59, 27.816, utc);
    Orbit orbit = new KeplerianOrbit(7201009.7124401, 1e-3, FastMath.toRadians(98.7), FastMath.toRadians(93.0), FastMath.toRadians(15.0 * 22.5), 0, PositionAngle.MEAN, eme2000, date, Constants.EIGEN5C_EARTH_MU);
    doTestTideEffect(orbit, IERSConventions.IERS_1996, 44.09481, 0.00000);
}

Example 28 with TimeScale

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

the class SolidTidesTest method testTideEffect2010BeforePoleModelChange.

@Test
public void testTideEffect2010BeforePoleModelChange() throws OrekitException {
    Frame eme2000 = FramesFactory.getEME2000();
    TimeScale utc = TimeScalesFactory.getUTC();
    AbsoluteDate date = new AbsoluteDate(2003, 07, 01, 13, 59, 27.816, utc);
    Orbit orbit = new KeplerianOrbit(7201009.7124401, 1e-3, FastMath.toRadians(98.7), FastMath.toRadians(93.0), FastMath.toRadians(15.0 * 22.5), 0, PositionAngle.MEAN, eme2000, date, Constants.EIGEN5C_EARTH_MU);
    doTestTideEffect(orbit, IERSConventions.IERS_2010, 44.25001, 0.70710);
}

Example 29 with TimeScale

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

the class SolidTidesTest method testTideEffect2003WithinAnnualPoleRange.

@Test
public void testTideEffect2003WithinAnnualPoleRange() throws OrekitException {
    Frame eme2000 = FramesFactory.getEME2000();
    TimeScale utc = TimeScalesFactory.getUTC();
    AbsoluteDate date = new AbsoluteDate(1969, 07, 01, 13, 59, 27.816, utc);
    Orbit orbit = new KeplerianOrbit(7201009.7124401, 1e-3, FastMath.toRadians(98.7), FastMath.toRadians(93.0), FastMath.toRadians(15.0 * 22.5), 0, PositionAngle.MEAN, eme2000, date, Constants.EIGEN5C_EARTH_MU);
    doTestTideEffect(orbit, IERSConventions.IERS_2003, 73.14011, 0.87360);
}

Example 30 with TimeScale

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

the class SolidTidesTest method testStateJacobianVs80ImplementationNoPoleTide.

@Test
public void testStateJacobianVs80ImplementationNoPoleTide() throws OrekitException {
    Frame eme2000 = FramesFactory.getEME2000();
    TimeScale utc = TimeScalesFactory.getUTC();
    AbsoluteDate date = new AbsoluteDate(2964, 8, 12, 11, 30, 00.000, utc);
    Orbit orbit = new KeplerianOrbit(7201009.7124401, 1e-3, FastMath.toRadians(98.7), FastMath.toRadians(93.0), FastMath.toRadians(15.0 * 22.5), 0, PositionAngle.MEAN, eme2000, date, Constants.EIGEN5C_EARTH_MU);
    Frame itrf = FramesFactory.getITRF(IERSConventions.IERS_2010, true);
    UT1Scale ut1 = TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true);
    NormalizedSphericalHarmonicsProvider gravityField = GravityFieldFactory.getConstantNormalizedProvider(5, 5);
    ForceModel forceModel = new SolidTides(itrf, gravityField.getAe(), gravityField.getMu(), gravityField.getTideSystem(), false, SolidTides.DEFAULT_STEP, SolidTides.DEFAULT_POINTS, IERSConventions.IERS_2010, ut1, CelestialBodyFactory.getSun(), CelestialBodyFactory.getMoon());
    Assert.assertTrue(forceModel.dependsOnPositionOnly());
    checkStateJacobianVs80Implementation(new SpacecraftState(orbit), forceModel, new LofOffset(orbit.getFrame(), LOFType.VVLH), 2.0e-15, false);
}