Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance

doi:10.1016/j.measurement.2019.107356

NTSC-IR

	Assessment of the BDS-3 on-board clocks and their impact on the PPP time transfer performance
	Qin, Weijin1,2,3 ; Ge, Yulong 1,2,3; Wei, Pei 1,2,3; Dai, Peipei 1,2,3; Yang, Xuhai 1,2,4
	2020-03-01
发表期刊	MEASUREMENT
ISSN	0263-2241
卷号	153 页码:10
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.
关键词	BDS-3 On-board clock evaluation Frequency stability Time and frequency transfer
资助者	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
DOI	10.1016/j.measurement.2019.107356
语种	英语
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
资助者	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
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Multidisciplinary ; Instruments & Instrumentation
WOS记录号	WOS:000509460000013
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/12020
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.