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An Evaluation of the Beidou Time System (BDT)

Published online by Cambridge University Press:  14 October 2011

Wei-guang Gao ,
Wen-hai Jiao ,
Yun Xiao ,
Mao-lei Wang  and
Hai-bo Yuan
Wei-guang Gao*
Affiliation:
(Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China) (School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China)
Wen-hai Jiao
Affiliation:
(Xian Research Institute of Surveying and Mapping, Xian 710054, China)
Yun Xiao
Affiliation:
(Xian Research Institute of Surveying and Mapping, Xian 710054, China)
Mao-lei Wang
Affiliation:
(Beijing Global Centre of Information Application and Development, Beijing 100094, China)
Hai-bo Yuan
Affiliation:
(National Timing Service Centre, the Chinese Academy of Sciences, Lintong 710600, China)
*
(Email: gaowg@beidou.gov.cn, gwg9821@163.com)
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Abstract

The evaluation of Beidou system time is one of the important tasks in constructing and developing the Beidou satellite navigation system. The evaluation methods based on two-way satellite time and frequency transfer method (TWSTFT) and GPS common-view method are proposed in this paper. Tests and performance evaluation of the Beidou time system (BDT) were conducted. Results show that BDT is stable and reliable. The BDT frequency deviation, Allan deviations and clock offsets, relative to UTC (NTSC), are 10e-14, 10e-15 and less than 30 ns respectively.

Keywords

Satellite navigation systemBDTUTC (NTSC)Time transfer
Type
Research Article
Information
The Journal of Navigation , Volume 64 , Supplement S1: Chinese Beidou and the Next Generation GNSS , November 2011 , pp. S31 - S39
Copyright
Copyright © The Royal Institute of Navigation 2011

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