Study for Ultra-Long-Distance Remote Reproduction of Standard Time Based on Rubidium Atomic Clock

The existing time synchronization system is mainly used for single-user customization, or multi-user low-precision, the demand for low-cost, high-precision, and multi user is increasing. To realize the high-precision reproduction and autonomous maintenance of standard time signals in ultra-long distance by multiple users, a dynamic reproduction method of standard time based on rubidium atomic clock has been researched in this paper. It uses the remote time comparison method based on continuous GPS common-vision proposed by the team of Ya Liu of NTCS to traces to the UTC(NTSC). By using the methods, it can reproduce 1PPS signal with deviation less than 5ns. At present, this method has been applied to standard time reproduction equipment and several time comparison systems.