RANGE FINDING CIRCUIT OF SATELLITE COMMUNICATION

摘要

PURPOSE:To improve the range finding accuracy of the TDMA system by adding a BTR synchronizing signal to a short burst signal only to quicken a rise time of range finding information. CONSTITUTION:When a receiver 11 of a slave station receives a short burst signal being a slave station signal in a frequency f2, the receiver 11 regenerates a clock from a BTR and detects an UW of the slave station. A receiver 10 of a base station signal receives a base station signal in a frequency f1 and detects a referenced RUW by using the clock signal. A frequency multiplier 14 obtains a difference of the detection timing between the UW and RUW by using the clock having a frequency of n-times and the result is transmitted to the slave station as the range finding information S via a selector 19. The steady-state processing is started by allowing the slave station to transmit the full burst signal toward a communication satellite based on the signal S.