Performance of global positioning system precise time and frequency transfer with integer ambiguity resolution

doi:10.1088/1361-6501/ac3a30

NTSC-IR > 守时理论与方法研究室

	Performance of global positioning system precise time and frequency transfer with integer ambiguity resolution
	Zhang,Pengfei 1,2; Tu,Rui 1,3,4; Lu,Xiaochun 1,4; Gao,Yuping 1,3; Lihong,Fan 1,4
	2022-01-10
发表期刊	Measurement Science and Technology
ISSN	0957-0233
卷号	33 期号:4
摘要	Abstract The Global Positioning System (GPS) carrier-phase technique is a widely used spatial tool for remote precise time and frequency transfer. However, the performance of traditional GPS time and frequency transfer has been limited because the ambiguity parameter is still the float solution. This study focuses on the performance of GPS precise time and frequency transfer with integer ambiguity resolution and discusses the corresponding mathematical model. Fractional-cycle bias (FCB) products were estimated using an ionosphere-free combination. The results show that the satellite wide-lane (WL) FCB products are stable, with a standard deviation (STD) of 0.006 cycles. The narrow-lane (NL) FCB products were estimated over 15 min with a STD of 0.020 cycles. More than 98% of the WL and NL residuals are smaller than 0.25 cycles, which helps to fix the ambiguity into integers during the time and frequency transfer. Subsequently, the performance of time transfers with integer ambiguity resolution at two time links between international laboratories was assessed in real-time and post-processing modes and compared. The results show that fixing the ambiguity into an integer in the real-time mode significantly decreases the convergence time compared with the traditional float approach. The improvement is ～49.5%. The frequency stability of the fixed solution is notably better than that of the float solution. Improvements of 48.15% and 27.9% were determined for the IENG–USN8 and WAB2–USN8 time links, respectively.
关键词	time and frequency transfer GNSS carrier phase observation integer ambiguity resolution
DOI	10.1088/1361-6501/ac3a30
语种	英语
WOS记录号	IOP:mst_33_4_045005
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/361003/14005
专题	守时理论与方法研究室
通讯作者	Tu,Rui
作者单位	1.National Time Service Center, Chinese Academy of Sciences, Shu Yuan Road, Xi’an 710600, People’s Republic of China 2.Xi’an Research Institute of Surveying and Mapping, 1 Mid-Yanta Road, Xi’an 710054, People’s Republic of China 3.University of Chinese Academy of Sciences, Yu Quan Road, Beijing 100049, People’s Republic of China 4.Key Laboratory of Precision Navigation Positioning and Timing Technology, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China
推荐引用方式 GB/T 7714	Zhang,Pengfei,Tu,Rui,Lu,Xiaochun,et al. Performance of global positioning system precise time and frequency transfer with integer ambiguity resolution[J]. Measurement Science and Technology,2022,33(4).
APA	Zhang,Pengfei,Tu,Rui,Lu,Xiaochun,Gao,Yuping,&Lihong,Fan.(2022).Performance of global positioning system precise time and frequency transfer with integer ambiguity resolution.Measurement Science and Technology,33(4).
MLA	Zhang,Pengfei,et al."Performance of global positioning system precise time and frequency transfer with integer ambiguity resolution".Measurement Science and Technology 33.4(2022).