The real time orbit determination system and method for the geostationary satellite based time synchronization service

摘要

PURPOSE: A real time orbit determination system in a time-synchronous service using a geostationary satellite and its method are provided to minimize position error of the satellite. CONSTITUTION: A measurement time supply apparatus(1) supplies a reference time. A personal computer(2) has a computer program to determine a position of a satellite by measuring synchronous signal receiving information from a time-synchronous signal receiver station(12) and to make the position of the satellite and time code. A time-synchronous signal generator(3) generates a time-synchronous signal. A time-synchronous signal transmitter station(5) transmits the time-synchronous signal to a satellite(6), and receives the synchronous signal receiving information from the time-synchronous signal receiver station and then transfers it to the personal computer. A transceiver equipment(7) transfers the time-synchronous signal from the satellite to a signal analysis apparatus(8) and transmits the synchronous signal receiving information to the satellite again. A measurement reference time supply apparatus(9) supplies the reference time. A time interval measurement apparatus(10) measures time interval by comparing the time-synchronous signal with the reference time. And the time-synchronous signal receiver station system comprises a personal computer(11) calculating a delay time of the synchronous signal using position information of a satellite and transmitting the synchronous signal receiving information to the satellite communication transceiver equipment(7).