Patent ID: 6633590
Filing Date: 2003-10-14
Classification: H04B

Abstract:
A method of synchronizing a reference clock of a first ground station and local clock of a first remote system, in particular a moving body and notably a satellite, the reference clock signals being contained in reference bursts transmitted by the ground station and received by the first remote system, said bursts beginning with a recognition word, the method including:a) acquisition in a first loop of preliminary synchronization between said reference bursts received by the first remote system and bursts generated by the first remote system and synchronized with the local clock, b) detection of the recognition word of the temporally synchronized reference bursts received by the first remote system and generation after detection of said recognition word of a time window containing a given number N of pulses of said reference clock, c) acquisition of the average phase of said pulses received from the reference clock in the time window and comparison with the phase of the local clock, and d) in a second loop, synchronization of the phase of the local clock with said average phase to achieve said synchronization of the local clock.