|LF and TV synchronization techniques have been widely used in China for several years. Shaanxi, Shanghai and Beijing Astronomical Observatories have cooperated with the U. S. Naval Observatory in making two portable clock calibration experiments in 1981 and 1982. The results indicate that the 1-F synchronization method can reach a timing accuracy of +/-1us and a precision of +/- 0.05ps to +0.20 ys over a range of 2000km with complex mixed In addition, it has been found that there is a systematic difference of about 4 us between USNO and other laboratories via the North-West Pacific Loran-C chain. The experiment also shows that the timing accuracy for the passive TV synchronization method is about +/- 1us and the precision of daily frequency calibrations is better than 2 parts in 10 to the 12th.
Proceedings of the 15th Annual Precise Time and Time Interval Systems and Applications Meeting
December 6 - 8, 1983
Naval Research Laboratory
|9 - 16
|Cite this article:
|Yun-rui, Miao, Xiao-pei, Pan, "Timing Accuracy of LF and VSynchronization Techniques," Proceedings of the 15th Annual Precise Time and Time Interval Systems and Applications Meeting, Washington, DC, December 1983, pp. 9-16.
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