Research on Quad-Frequency PPP-B2b Time Transfer

doi:10.1109/MIM.2024.10423730

NTSC-IR > 导航与通信研究室

	Research on Quad-Frequency PPP-B2b Time Transfer
	Zhang, Runzhi 1; Li, Lan 2,3; Li, Xueqing 4; Ma, Hongjiao5 ; Xiao, Gongwei 6; Zhang, Jihai 5
	2024-02-01
发表期刊	IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE
ISSN	1094-6969
卷号	27 期号:1 页码:57-62
摘要	Carrier phase time transfer which is a crucial technique in universal time coordinated (UTC) calculation is implemented through precise point positioning (PPP). Since August 2020, the Beidou global navigation satellite system (BDS-3) has provided users with the precise satellite product which is an essential external input in the PPP implementation, named the PPP-B2b product, through three geostationary earth orbit (GEO) satellites instead of a network in the Asia-Pacific area. The PPP-B2b product can be considered to solve the instability problem caused by network interruption in traditional PPP time transfer. Currently, the fact that the PPP-B2b time transfer using dual-frequency (DF) ionosphere-free combination can achieve sub-nanosecond accuracy has been proven. Considering the BDS-3 can provide users with a wide range of frequency signals for PPP; meanwhile, the multi-frequency PPP will improve the accuracy of time transfer and accelerate the convergence. This improvement can be attributed to an increase in the number of observation equations due to the utilization of multiple frequencies. To promote the application of real-time PPP-B2b time comparison in UTC calculation, a quad-frequency (QF) PPP-B2b time transfer model is proposed and investigated. Compared to DF PPP-B2b time transfer, the accuracy of the QF time transfer model was verified from long-baseline time links and zero-baseline common clock difference (CCD). Results showed that the QF PPP-B2b time transfer had smoother CCD results and fluctuated within 0.1 ns, compared to the DF PPP-B2b model. Taking the PPP time comparison using the GBM product as a reference, the results for all long-baseline links show that the residuals of the QF PPP-B2b time comparison truly fluctuate within 1 ns.
关键词	Charge coupled devices Time-frequency analysis Satellites Satellite broadcasting Real-time systems Mathematical models Convergence
资助者	State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics
DOI	10.1109/MIM.2024.10423730
语种	英语
资助项目	State Key Laboratory of Geodesy and Earth Dynamics[SKLGED2022-3-3]
资助者	State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics ; State Key Laboratory of Geodesy and Earth Dynamics
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS记录号	WOS:001167953700003
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14736
专题	导航与通信研究室
通讯作者	Zhang, Runzhi
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr NTSC, Key Lab Precis Nav & Timing Technol, Xian, Peoples R China 2.Xian Univ Posts & Telecommun, Sch Commun & Informat Engn, Xian, Peoples R China 3.Xian Univ Posts & Telecommun, Sch Artificial Intelligence, Xian, Peoples R China 4.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 5.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 6.Xian Univ Posts & Telecommun, Xian, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Runzhi,Li, Lan,Li, Xueqing,et al. Research on Quad-Frequency PPP-B2b Time Transfer[J]. IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE,2024,27(1):57-62.
APA	Zhang, Runzhi,Li, Lan,Li, Xueqing,Ma, Hongjiao,Xiao, Gongwei,&Zhang, Jihai.(2024).Research on Quad-Frequency PPP-B2b Time Transfer.IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE,27(1),57-62.
MLA	Zhang, Runzhi,et al."Research on Quad-Frequency PPP-B2b Time Transfer".IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE 27.1(2024):57-62.