SS-TDMA SATELLITE COMMUNICATION SYNCHRONIZATION SYSTEM

PURPOSE:To permit all earth stations to synchronize with superframes on a communication satellite, by using a synchronizing burst sent out of a reference station to all the earth stations, and to allocate satellite circuits flexibly against communication traffic variation, by providing the communication statellite with a terminator, a terminator connection/disconnection controlling function, and a superframe generating function. CONSTITUTION:To maintain a synchronizing wind, the terminator 13 is provided to the satellite in an example (a) and then connected to a matrix switch 7. In an example (b), the terminator 13 is connected to the output of a receiver 5 corresponding to a zone to which the reference station belongs through a changeover switch 14, which connects the output of the receiver 5 to the terminator or to the switch 7 under the control of a control circuit 8. In a figure, 10 is a telemeter/command antenna (or dedicated control circuit). For control accompanying a connection pattern change of the satellite by using superframes, the reference station sends a connection pattern switching command through a telemeter/command station, and then receives its answer and also sends a command for changing circuit allocation to all earth stations.