Synchronisation system for time-multiplexed transmitters - detects gap in transmission and inserts signals from last-received transmitter into subsequent gaps

摘要

The synchronisation system has each transmitter sending out its transmit signals in synchronism with the signals it is receiving. Any transmitter coming into operation for the first time is initially prevented from sending its own signals. A transmission gap between received signals is detected and its duration is equal to or greater than that of the transmitter's own signal. After one such gap has been detected the transmitter's own signals are sent in the gaps that follow the detected gap periodically. The synchronisation range of the receiver part of the transmitting station is greater than the range of the receive stations.