DISSEMINATION METHOD OF COORDINATED UNIVERSAL TIME VIA COMMUNICATION SATELLITE

A method for simultaneously broadcasting universal standard time by using a satellite is provided to synchronize a universal standard time within 10 nanoseconds by using a communication satellite. Comparison of time of earth stations which participate in a time synchronization network is performed to secure data(S10). The data is transmitted from a main control station, and time correction information and satellite position information of an atomic clock of each earth station are generated through time comparison data of the respective earth stations(S20). The main control station broadcasts standard time information including the time correction information to the respective earth stations through a satellite, and users of the earth stations demodulate time information from data corresponding to the respective earth stations(S30). Synchronization of standard time of all the users in the time synchronization network is performed(S40).