Research on time and frequency transfer during PPP convergence with parameters correlation comparison

doi:10.1016/j.measurement.2020.108597

	Research on time and frequency transfer during PPP convergence with parameters correlation comparison
	Ouyang, Mingjun 1; Li, Junzhi 1; Li, Wanqing 1; Ge, Yulong 2,3; Zhu, Xiangwei 1; Chen, Zhengkun 1; Dai, Zhiqiang 1
刊名	MEASUREMENT
	2021-03-01
卷号	173 页码:10
关键词	Time frequency transfer Precise point positioning Convergence period Parameter correlation Modified Allan variance
ISSN号	0263-2241
DOI	10.1016/j.measurement.2020.108597
英文摘要	The PPP (Precise Point Positioning) has a quite long convergence time at the beginning of the positioning process or the scene that real-time data was interrupted to resume, and the positioning accuracy during the convergence period does not meet the requirements of high-precision applications. This paper studies the PPP method for time transfer and its accuracy and stability during the convergence time. Based on study the correlation between clock difference, coordinates and tropospheric parameters, the method of fixing coordinates was proposed. By the application of prior coordinate information, compared to the conventional method, with 83 stations, RMS(Root Mean Square) of clock improved range from 2.23% to 98.51% and STD (Standard Deviation) improved range from 10.13% to 92.56%; also, the time transfer accuracy was below 1 ns during the convergence period. When the modified Allan variance was adopted, the frequency stability of clock improved range from 0.55% to 30.28%, and improved up to 67.43%, which verified the improvement of frequency stability during the convergence period when prior information on coordinate was used.
资助项目	Key Special Projects of the National Key Research and Development Plan[2018YFB0505200] ; National Natural Science Foundation of China[61973328] ; National Natural Science Foundation of China[91938301]
WOS关键词	GPS
WOS研究方向	Engineering ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000662225100024
资助机构	Key Special Projects of the National Key Research and Development Plan ; Key Special Projects of the National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Special Projects of the National Key Research and Development Plan ; Key Special Projects of the National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Special Projects of the National Key Research and Development Plan ; Key Special Projects of the National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Special Projects of the National Key Research and Development Plan ; Key Special Projects of the National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10678]
专题	中国科学院国家授时中心
通讯作者	Ouyang, Mingjun; Zhu, Xiangwei
作者单位	1.Sun Yat Sen Univ, Sch Elect & Commun Engn, Guangzhou 510006, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ouyang, Mingjun,Li, Junzhi,Li, Wanqing,et al. Research on time and frequency transfer during PPP convergence with parameters correlation comparison[J]. MEASUREMENT,2021,173:10.
APA	Ouyang, Mingjun.,Li, Junzhi.,Li, Wanqing.,Ge, Yulong.,Zhu, Xiangwei.,...&Dai, Zhiqiang.(2021).Research on time and frequency transfer during PPP convergence with parameters correlation comparison.MEASUREMENT,173,10.
MLA	Ouyang, Mingjun,et al."Research on time and frequency transfer during PPP convergence with parameters correlation comparison".MEASUREMENT 173(2021):10.