WEI Pei1,2,3, YANG Xu-hai1,2, GUO Ji1,2, LI Zhi-gang1,2, QIN Wei-jin1,2
(1. National Time Service Centre, Chinese Academy of Sciences, Xi′an 710600, China;
2. Key Laboratory of Precision Navigation and Timing Technology, National Time Service Center,
Chinese Academy of Sciences, Xi′an 710600, China;
3.University of Chinese Academy of Sciences, Beijing 100039, China)
Abstract: The two-way satellite time and frequency transfer(TWSTFT) is a kind of remote time comparison method with high precision. Generally, the comparison is not carried out continuously. The data from C-band TWSTFT Network of the national time service center(NTSC) was used for analyzing the level of non-continuous TWSTFT. The raw data of non-continuous TWSTFT was dealt with linear interpolation method and the result was compared with the continuous TWSTFT. The comparison shows that the RMS of the difference between non-continuous and continuous TWSTFT is less than 1ns when the interval time is less than 2.5d, and the RMS is less than 0.5 ns when the interval time is 0.5 d.
Key words: TWSTFT; time comparison; time delay
2009 National Time Service Center (NTSC), Chinese Academy of Sciences , All Rights Reserved