Enhancing real-time precise point positioning time and frequency transfer with receiver clock modeling

doi:10.1007/s10291-018-0814-y

	Enhancing real-time precise point positioning time and frequency transfer with receiver clock modeling
	Ge, Yulong 1,2,3; Zhou, Feng 4; Liu, Tianjun 5; Qin, WeiJin 2,3; Wang, Shengli 6; Yang, Xuhai 2,3,7
刊名	GPS SOLUTIONS
	2019
卷号	23 期号:1 页码:14
关键词	GPS Real-time precise point positioning (RT-PPP) Time and frequency transfer Receiver clock offset modeling
ISSN号	1080-5370
DOI	10.1007/s10291-018-0814-y
英文摘要	Thanks to the international GNSS service (IGS), which has provided an open-access real-time service (RTS) since 2013, real-time precise point positioning (RT-PPP) has become a major topic in the time community. Currently, a few scholars have studied RT-PPP time transfer, and the correlation of the receiver clock offsets between adjacent epochs have not been considered. We present a receiver clock offset model that considers the correlation of the receiver clock offsets between adjacent epochs using an a priori value. The clock offset is estimated using a between-epoch constraint model rather than a white noise model. This approach is based on two steps. First, the a priori noise variance is based on the Allan variance of the receiver clock offset derived from GPS PPP solutions with IGS final products. Second, by applying the between-epoch constraint model, the RT-PPP time transfer is achieved. Our numerical analyses clarify how the approach performs for RT-PPP time and frequency transfer. Based on five commonly used RTS products and six IGS stations, two conclusions are obtained straightforwardly. First, all RT-PPP solutions with different real-time products are capable of time transfer. The standard deviation (STD) values of the clock difference between the PPP solutions with respect to the IGS final clock products are less than 0.3ns. Second, the STD values are reduced significantly by applying our approach. The reduction percent of STD values ranges from 4.0 to 35.5%. Moreover, the largest improvement ratio of frequency stability is 12 as compared to the solution of the white noise model. Note that the receiver clock offset from IGS final clock products is regarded as a reference.
资助项目	National Natural Science Foundation of China[41104021] ; National Natural Science Foundation of China[11173026] ; National Natural Science Foundation of China[41704008] ; National Natural Science Foundation of China[11703033] ; iGMAS ; Program for Excellent Talents in University of Anhui Province of China[gxyq2017008]
WOS关键词	GPS ; VIEW
WOS研究方向	Remote Sensing
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000453908800001
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; iGMAS ; iGMAS ; Program for Excellent Talents in University of Anhui Province of China ; Program for Excellent Talents in University of Anhui Province of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; iGMAS ; iGMAS ; Program for Excellent Talents in University of Anhui Province of China ; Program for Excellent Talents in University of Anhui Province of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; iGMAS ; iGMAS ; Program for Excellent Talents in University of Anhui Province of China ; Program for Excellent Talents in University of Anhui Province of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; iGMAS ; iGMAS ; Program for Excellent Talents in University of Anhui Province of China ; Program for Excellent Talents in University of Anhui Province of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/11747]
专题	中国科学院国家授时中心
通讯作者	Ge, Yulong; Zhou, Feng
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China 3.Chinese Acad Sci, Key Lab Precise Positioning & Timing Technol, Xian 710600, Shaanxi, Peoples R China 4.QianXun Spatial Intelligence Inc, Shanghai 200438, Peoples R China 5.China Univ Min & Technol, NASG Key Lab Land Environm & Disaster Monitoring, Xuzhou 221116, Jiangsu, Peoples R China 6.Shandong Univ Sci & Technol, Inst Ocean Engn, Qingdao 266000, Peoples R China 7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ge, Yulong,Zhou, Feng,Liu, Tianjun,et al. Enhancing real-time precise point positioning time and frequency transfer with receiver clock modeling[J]. GPS SOLUTIONS,2019,23(1):14.
APA	Ge, Yulong,Zhou, Feng,Liu, Tianjun,Qin, WeiJin,Wang, Shengli,&Yang, Xuhai.(2019).Enhancing real-time precise point positioning time and frequency transfer with receiver clock modeling.GPS SOLUTIONS,23(1),14.
MLA	Ge, Yulong,et al."Enhancing real-time precise point positioning time and frequency transfer with receiver clock modeling".GPS SOLUTIONS 23.1(2019):14.