Abstract: Time codes have wide applications in various fields such as aerospace, finance, and power. Based on satellite common view technology, the time difference between the central station and the remote station is obtained. By taming the rubidium clock, a long-distance and high-precision time code synchronization method between the central station and the remote station is studied, which enables high-precision timing at the remote station and high-precision time code calibration for general time system equipment. Through experimental verification, the time synchronization standard deviation between the remote station and the central station is better than 5 ns, the accuracy of 1PPS for external timing by the remote station is better than ± 20 ns, the accuracy of B (DC) is better than ± 20 ns, and the accuracy of B (AC) is better than ± 10 μs; Remote station external time code measurement deviation is 1PPS, B (DC) ≤ 20 ns, B (AC) ≤ 10 μs. Based on commonview taming, time code synchronization enables remote stations to have high-precision inspection and support capabilities that cover different support requirements, providing a high-precision and convenient means of time-frequency equipment inspection, testing, and emergency support.

Key words: Satellite commonview, Tame, Synchronization, Timing, Measurement