METHOD FOR SYNCHRONIZING TIME/FREQUENCY IN TIME/FREQUENCY SYNCHRONOUS SYSTEM USING GEOSTATIONARY SATELLITE

摘要

PURPOSE: A method for synchronizing time/frequency is provided to synchronize one geostationary satellite with a base stations on land through a prior communication link. CONSTITUTION: In a method for synchronizing time/frequency, a control center transmits a position information of a satellite, time information, pseudo noise(PN) signal or reference signal to the satellite. The satellite transmits an output signal of the control center to a terrestrial base station requiring accurate time/frequency synchronization by using one channel among prior communication channels. The base station detects a location information of the satellite and a time/frequency information, compares the detected time/frequency information with a pre-measured own location information, and the location information of the satellite.