中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家授时中心
  3. 中国科学院国家授时中心
热门
Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance

文献类型：期刊论文

作者Qin, Weijin1,2,3; Ge, Yulong1,2,3; Wei, Pei1,2,3; Dai, Peipei1,2,3; Yang, Xuhai1,2,4
刊名MEASUREMENT
出版日期2020-03-01
卷号153页码:10
关键词BDS-3 On-board clock evaluation Frequency stability Time and frequency transfer
ISSN号0263-2241
DOI10.1016/j.measurement.2019.107356
英文摘要The atomic clock is the heart of a satellite navigation system and limits the user positioning, navigation and timing (PNT) accuracy; hence, it is necessary to acquire more information about the BDS-3 on-board clocks. In this contribution, sixty days of BDS-3 clock results were analyzed in terms of their stability and prediction accuracy and compared with the results from BDS-2 (BDS: BeiDou Navigation Satellite System), GPS (Global Positioning System), GLONASS (Global Navigation Satellite System) and Galileo clocks. The results show that BDS-3 clocks have greater stability than BDS-2 and BDS-3 s clocks, GPS Block IIA, Block IIR, and Block IIR-M clocks, and GLONASS clocks, while their stability is comparable to that of Block IIF clocks and inferior to that of Galileo clocks. In comparison with the stability of BDS-2 clocks, the percentages of improvement in the stability of BDS-3 clocks range from 5% to 65%. Overall, the stabilities of BDS-3 clocks at 1000 s, 10000 s and 86400 s are nearly 3 similar to 6E-14, 2 similar to 8E-14 and 1 similar to 24E-14, respectively. Furthermore, the prediction accuracy of BDS-3 clocks is 0.24 ns, which is smaller than that of BDS-2 and GPS clocks. Finally, preliminary experiments were conducted with regard to precise point positioning (PPP) time transfer using BDS-3 signals. The four solutions, namely, the BDS-2, BDS- 2 + BDS-3, BDS-3, and GPS solutions, were compared in terms of their frequency stability. As a slight imperfection, BDS-3 applications are restricted by the limited number of satellites. Nevertheless, the link results based on BDS-3 are more stable than those based on BDS-2 and BDS-2 + BDS-3. In particular, the BDS-3 results outperform the GPS results in their long-term stability. At typical averaging times, namely, 1000 s, 10,000 s, and 86,400 s, in comparison with the GPS results, the percentages of improvement in the link stability are 22.91, 38.40 and 19.03%, respectively, while those in comparison with the BDS-2 results are 40.08, 34.06 and 10.90%, respectively. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目National Natural Science Foundation of China[11703033] ; Natural Science Foundation of Shaanxi[2018JQ1020] ; Youth Promotion Committee of the Chinese Academy of Sciences
WOS研究方向Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000509460000013
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi ; Natural Science Foundation of Shaanxi ; Youth Promotion Committee of the Chinese Academy of Sciences ; Youth Promotion Committee of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi ; Natural Science Foundation of Shaanxi ; Youth Promotion Committee of the Chinese Academy of Sciences ; Youth Promotion Committee of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi ; Natural Science Foundation of Shaanxi ; Youth Promotion Committee of the Chinese Academy of Sciences ; Youth Promotion Committee of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi ; Natural Science Foundation of Shaanxi ; Youth Promotion Committee of the Chinese Academy of Sciences ; Youth Promotion Committee of the Chinese Academy of Sciences
源URL[http://210.72.145.45/handle/361003/12019]  
专题中国科学院国家授时中心
通讯作者Qin, Weijin
作者单位1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
2.Chinese Acad Sci, Key Lab Precise Positioning & Timing Technol, Xian 710600, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Qin, Weijin,Ge, Yulong,Wei, Pei,et al. Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance[J]. MEASUREMENT,2020,153:10.
APA Qin, Weijin,Ge, Yulong,Wei, Pei,Dai, Peipei,&Yang, Xuhai.(2020).Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance.MEASUREMENT,153,10.
MLA Qin, Weijin,et al."Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance".MEASUREMENT 153(2020):10.

入库方式： OAI收割

来源：国家授时中心

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。