METHOD FOR SYNCHRONIZING TRANSMISSIONS OF USER SIGNALS IN A HYBRID COMMUNICATION NETWORK

摘要

The invention concerns a device dedicated to the synchronization of the transmission of user signals in a single-frequency hybrid network comprising a transmission satellite (SAT) and regenerative transmitters (E1-E6) for retransmitting received user signals, according to a common frequency and a common waveform, to user terminals (T1, T2). Said method consists in temporally offsetting relative to a temporal marker (MT), which corresponds to the time of arrival of a selected element of user signals derived from the satellite (SAT) at a reference terrestrial arc (AR), the time of retransmission of the received user signals by each transmitter (E1-E6) by a local duration based on the respective positions of the transmitter and of the satellite (SAT) relative to a reference position (PR) selected on said arc (AR), so that common user signals retransmitted by the satellite (SAT) and the transmitter reach a user terminal (T1, T2) at substantially the same time.