Improving Galileo's Carrier-Phase Time Transfer Based on Prior Constraint Information

doi:10.1017/S0373463318000486

NTSC-IR

	Improving Galileo's Carrier-Phase Time Transfer Based on Prior Constraint Information
	Zhang, Pengfei 1,2; Tu, Rui 1,2,3; Gao, Yuping 1; Liu, Na 1; Zhang, Rui 1,3
	2019
发表期刊	JOURNAL OF NAVIGATION
ISSN	0373-4633
卷号	72 期号:1 页码:121-139
摘要	The Carrier-Phase (CP) technique used in the Global Positioning System (GPS) has proved to be a useful spatial tool for remote precise time transfer. Galileo is a Global Navigation Satellite System like GPS. However, currently, given the low number of satellites at any one observation epoch, Galileo's accuracy and continuity of time transfer leave much to be desired. To achieve better performance of time transfer for Galileo, this study has developed a new approach for Galileo CP time transfer, using prior constraint information such as precise coordinates and troposphere zenith delay constraints. The new approach was applied for precise time transfer in real-time mode and post-processed mode for short baseline and long baseline observations. For the short baseline time link in real-time mode, compared with the standard Galileo CP, the standard deviation improved by 51.4% for the troposphere zenith delay constraint, 47.6% for the station coordinates constraint, and 49.5% when considering both constraints simultaneously. At a 10,000 s time interval, in comparison to the standard CP, the three constraint approaches show stable results as well as improvements of nearly an order of magnitude. In post-processed mode, the constraint approach for Galileo time transfer showed little improvement compared to the standard CP technique for both the short baseline and long baseline time links.
关键词	Galileo Prior constraint information Time transfer Carrier phase Troposphere zenith delay constraint Station coordinates constraint
资助者	program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents"
DOI	10.1017/S0373463318000486
关键词[WOS]	GPS ; GLONASS
语种	英语
资助项目	program of National Key Research and Development Plan of China[2016YFB0501804] ; National Natural Science Foundation of China[41504006] ; National Natural Science Foundation of China[41674034] ; Chinese Academy of Sciences (CAS)[Y507YR1201] ; Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC028] ; National Time Service Center (NTSC) programs of "Young creative talents"[Y824SC1S06]
资助者	program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents" ; program of National Key Research and Development Plan of China ; program of National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Center (NTSC) programs of "Young creative talents" ; National Time Service Center (NTSC) programs of "Young creative talents"
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Oceanography
WOS记录号	WOS:000454299200008
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/361003/11776
专题	中国科学院国家授时中心
通讯作者	Tu, Rui
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Kev Lab Precis Nav & Timing Technol, Xian 710600, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Pengfei,Tu, Rui,Gao, Yuping,et al. Improving Galileo's Carrier-Phase Time Transfer Based on Prior Constraint Information[J]. JOURNAL OF NAVIGATION,2019,72(1):121-139.
APA	Zhang, Pengfei,Tu, Rui,Gao, Yuping,Liu, Na,&Zhang, Rui.(2019).Improving Galileo's Carrier-Phase Time Transfer Based on Prior Constraint Information.JOURNAL OF NAVIGATION,72(1),121-139.
MLA	Zhang, Pengfei,et al."Improving Galileo's Carrier-Phase Time Transfer Based on Prior Constraint Information".JOURNAL OF NAVIGATION 72.1(2019):121-139.