Differential Timing Method Based on Modified Traceability Model

doi:10.1017/S0373463320000314

NTSC-IR

	Differential Timing Method Based on Modified Traceability Model
	Liu, Ying 1,2; Jiao, Wenhai 2; Xu, Longxia3,4 ; Li, Xiaohui 3,4
	2020-11-01
发表期刊	JOURNAL OF NAVIGATION
ISSN	0373-4633
卷号	73 期号:6 页码:1326-1339
摘要	The common view time transfer and two-way time and frequency transfer methods are currently the main means for achieving time synchronisation at nanosecond level. However, these methods have some limitations in real time and cost, which limit their wide applications in many fields, such as time synchronisation among base stations of the upcoming 5G network. In order to meet the requirements of nanosecond time synchronisation, a low-cost differential timing method is proposed in this paper by changing the manner of generation of traceability model parameters in GNSS navigation messages. The time deviation between GNSS system time and the timing laboratory that maintains Coordinated Universal Time (UTC) kept by timing laboratory named k (UTC(k)) is monitored by receiving the GNSS signal in space with monitoring receivers. The new traceability model parameters are generated with the monitored time deviations and then broadcast to users through the GNSS navigation message. The precision of the one-way timing method can be improved from tens of nanoseconds to the order of several nanoseconds with the proposed method. In addition, there are obvious advantages to carry out this method on the geostationary satellites in the BeiDou navigation satellite (BDS) constellation. The proposed method is verified on an experimental platform based on the UTC(NTSC) time frequency signal and the geostationary satellites in the BDS-3 constellation.
关键词	One-way Timing Timing Laboratory Traceability Model Differential BDS
DOI	10.1017/S0373463320000314
语种	英语
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Oceanography
WOS记录号	WOS:000589079800010
出版者	CAMBRIDGE UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/12089
专题	中国科学院国家授时中心
通讯作者	Xu, Longxia
作者单位	1.Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai, Peoples R China 2.Beijing Inst Tracking & Telecommun Technol, Beijing, Peoples R China 3.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 4.Chinese Acad Sci, Key Lab Precis Nav Positioning & Timing, Xian, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ying,Jiao, Wenhai,Xu, Longxia,et al. Differential Timing Method Based on Modified Traceability Model[J]. JOURNAL OF NAVIGATION,2020,73(6):1326-1339.
APA	Liu, Ying,Jiao, Wenhai,Xu, Longxia,&Li, Xiaohui.(2020).Differential Timing Method Based on Modified Traceability Model.JOURNAL OF NAVIGATION,73(6),1326-1339.
MLA	Liu, Ying,et al."Differential Timing Method Based on Modified Traceability Model".JOURNAL OF NAVIGATION 73.6(2020):1326-1339.