Autonomous orbit control method and system for a geostationary satellite

摘要: A stationkeeping method for a satellite in geostationary orbit comprises the steps of: determining at same time angle α 1 between satellite-Sun direction and satellite-Earth 2 satellite-Pole Star direction, deducing therefrom state vector E consisting orbital parameters by formuls: Z=H.E+C.B where: Z is measurement components of which are deduced from angles , H measuring matrix, C bias sensitivity B determined beforehand comparison measured measurements made on ground, manoeuvres applying using thrusters.