Data initialization : Différence entre versions
De Wiki
| Ligne 21 : | Ligne 21 : | ||
Data equivalent to the “[[Earth_Features|Earth features]]” tab are distributed via two arguments: | Data equivalent to the “[[Earth_Features|Earth features]]” tab are distributed via two arguments: | ||
| − | :1. A ExtendedOneAxisEllipsoid object which will define the shape of the planet | + | :1. A <font color=#4169E1>ExtendedOneAxisEllipsoid</font> object which will define the shape of the planet |
<syntaxhighlight lang="java"> | <syntaxhighlight lang="java"> | ||
final ExtendedOneAxisEllipsoid EARTH = | final ExtendedOneAxisEllipsoid EARTH = | ||
Version du 7 juillet 2017 à 06:57
Orbit
To initialize an orbit, we simply have to build it using [PATRIUS] object. For example:
final TimeScale TUC = TimeScalesFactory.getUTC(); final AbsoluteDate date = new AbsoluteDate("2010-01-01T12:00:00.000", TUC); final double sma = Constants.WGS84_EARTH_EQUATORIAL_RADIUS + 250.e3; final double ecc = 0.; final double inc = FastMath.toRadians(51.6); final double raan = FastMath.toRadians(0.); final double pa = FastMath.toRadians(0.); final double ano = FastMath.toRadians(0.); final Frame GCRF = FramesFactory.getGCRF(); final KeplerianOrbit iniOrbit = new KeplerianOrbit(sma, ecc, inc, raan, pa, ano, PositionAngle.MEAN, GCRF, date, MU);
Earth features
Data equivalent to the “Earth features” tab are distributed via two arguments:
- 1. A ExtendedOneAxisEllipsoid object which will define the shape of the planet
final ExtendedOneAxisEllipsoid EARTH = new ExtendedOneAxisEllipsoid(REQ, FLAT, ITRF, "EARTH");
- 2. A type of enumerates that will propose some pre-defined configurations as:
- NOTHING (all options set to null)
- ONLY_PREC_NUT (only precession and nutation)
- FACTORY (equivalent to the most complete definition as in the GUI)
- IGNORE (nothing is define internally by PSIMU which will take into account the user parametrization previously done)
