def calcTg(date):
jdut1 = jday(date.year, date.month, date.day, date.hour, date.minute,
date.second)
Tg = _gstime(jdut1)
return Tg
def _propagate_ecef(self, when_utc):
"""Return position and velocity in the given date using ECEF coordinate system."""
timetuple = (when_utc.year, when_utc.month, when_utc.day,
when_utc.hour, when_utc.minute, when_utc.second)
position_eci, velocity_eci = self.propagator.propagate(*timetuple)
gmst = _gstime(jday(*timetuple))
position_ecef = coordinate_systems.eci_to_ecef(position_eci, gmst)
velocity_ecef = coordinate_systems.eci_to_ecef(velocity_eci, gmst)
return (position_ecef, velocity_ecef)
def _propagate_only_position_ecef(self, timetuple):
"""Return position in the given date using ECEF coordinate system."""
position_eci, _ = self.propagator.propagate(*timetuple)
gmst = _gstime(jday(*timetuple))
return coordinate_systems.eci_to_ecef(position_eci, gmst)
def gstime_from_datetime(when_utc):
timelist = list(when_utc.timetuple()[:6])
timelist[5] = timelist[5] + when_utc.microsecond * 1e-6
return _gstime(jday(*timelist))
def gstime_from_datetime(when_utc):
timetuple = when_utc.timetuple()[:6]
return _gstime(jday(*timetuple))
def gstime_from_datetime(when_utc):
timetuple = timetuple_from_dt(when_utc)
return _gstime(jday(*timetuple))
