Progress of BeiDou time transfer at NTSC

doi:10.1088/1681-7575/aaa673

NTSC-IR

	Progress of BeiDou time transfer at NTSC
	Guang,Wei 1,2,3; Dong,Shaowu 1,3,4; Wu,Wenjun 1,3,4; Zhang,Jihai 1,3; Yuan,Haibo 1,3; Zhang,Shougang 1,3,4
	2018-02-14
发表期刊	Metrologia
ISSN	0026-1394
卷号	55 期号:2
摘要	Abstract Time transfer using global navigation satellite system (GNSS) is a primary method of remote atomic clock comparisons. As of today, there are four operational GNSS systems, namely GPS, GLONASS, Galileo and BeiDou Navigation Satellite System (BDS or BeiDou). All of them can continuously provide position, navigation and time services. This paper mainly focuses on the progress of BeiDou time transfer at the National Time Service Center, Chinese Academy of Sciences (NTSC). In order to realize the BeiDou common view (CV) time comparison, we developed the Rinex2CGGTTS software according to the guidelines of the Common GNSS Generic Time Transfer Standard, Version 2E (CGGTTS V2E). By comparing the solutions of the Rinex2CGGTTS software to the solutions of the sbf2cggtts software provided by the manufacturer of our multi-GNSS receiver, we found the sbf2cggtts (version 1.0.5) solutions contained biases in measurements to different BeiDou satellites. The biases are most likely caused by sbf2cggtts’ timing group delay corrections in data processing. The noise of the observation data is analyzed by code multipath and common clock difference. Finally, the BeiDou CV results are compared to the GPS/GLONASS/Galileo CV results between NTSC and three European UTC(k) laboratories, including Royal Observatory of Belgium (ORB), Real Institute y Observatory de la Armada (ROA), Research Institutes of Sweden (RISE or SP). For the comparisons of each baseline, we aligned the BeiDou/Galileo/GLONASS links to the calibrated GPS link with the double-difference method. The results show that the performance of BeiDou CV is correlated to the number of BeiDou satellites available in common view. With the current BeiDou constellation, the standard deviation of the differences between all BeiDou CV satellites averaging result and the GPS PPP result is 2.03 ns, 2.90 ns and 4.06 ns for ORB-NTSC, SP-NTSC and ROA-NTSC links respectively.
关键词	time transfer BDS CV CGGTTS V2E
DOI	10.1088/1681-7575/aaa673
语种	英语
WOS记录号	IOP:0026-1394-55-2-aaa673
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/10693
专题	中国科学院国家授时中心
作者单位	1.National Time Service Center, Chinese Academy of Sciences (NTSC), Xi’an 710600, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing 10039, People’s Republic of China 3.Key Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 10039, People’s Republic of China
推荐引用方式 GB/T 7714	Guang,Wei,Dong,Shaowu,Wu,Wenjun,et al. Progress of BeiDou time transfer at NTSC[J]. Metrologia,2018,55(2).
APA	Guang,Wei,Dong,Shaowu,Wu,Wenjun,Zhang,Jihai,Yuan,Haibo,&Zhang,Shougang.(2018).Progress of BeiDou time transfer at NTSC.Metrologia,55(2).
MLA	Guang,Wei,et al."Progress of BeiDou time transfer at NTSC".Metrologia 55.2(2018).