METHOD AND SYSTEM FOR ESTIMATING THE ATTITUDE OF A SATELLITE BY MEANS OF MEASUREMENTS TAKEN BY GROUND STATIONS

摘要

The present invention relates to a method (50) for estimating the attitude of a satellite (20), said satellite being configured to generate and to transmit a first reference signal on a downlink by means of a first antenna. transmission (21), and to retransmit useful signals on the downlink by means of a second transmission antenna (23), comprising the steps of: - transmission (51) by a ground station of a second reference signal , - retransmission (52) by the satellite of the second reference signal, - reception (54) of the first reference signal and of the second reference signal by at least three measuring stations (31), - calculation (55), for each measurement station (31), a differential power measurement between the respective powers of the first reference signal and of the second reference signal, - estimation (56) of the attitude of the satellite as a function of the calculated differential power measurements.