Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer

doi:10.3390/app8081254

	Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer
	Ge, Yulong 1,2,3; Qin, WeiJin 2,3; Cao, Xinyun 4; Zhou, Feng 5; Wang, Shengli 6; Yang, Xuhai 2,3,7
刊名	APPLIED SCIENCES-BASEL
	2018-08-01
卷号	8 期号:8 页码:19
关键词	precise point positioning (PPP) international time transfer GLONASS inter-frequency code biases (IFCBs)
ISSN号	2076-3417
DOI	10.3390/app8081254
英文摘要	International time transfer based on Global Navigation Satellite System (GLONASS) precise point positioning (PPP) is influenced by inter-frequency code biases (IFCBs) because of the application of frequency division multiple access technique. This work seeks to gain insight into the influence of GLONASS IFCBs on international time transfer based on GLONASS-only PPP. With a re-parameterization process, three IFCB handling schemes are proposed: neglecting IFCBs, estimating IFCB for each GLONASS frequency number, and estimating IFCB for each GLONASS satellite. Observation data collected from 39 globally distributed stations in a 71-day period (DOY 227-297, 2017) was exclusively processed. For the comparison reason, Global Positioning System (GPS)-only PPP solutions were regarded as reference values. The clock differences derived from GPS- and GLONASS-only PPP solutions were then analyzed. The experimental results demonstrated that considering GLONASS IFCBs could reduce standard deviation (STD) of the clock differences for both identical receiver types and mixed receiver types, of which reduction was from 3.3% to 62.6%. Furthermore, compared with neglecting IFCBs, STD of the clock differences with estimating IFCB for each GLONASS satellite in coordinate-fixed mode was reduced by more than 30% from 0.30 to 0.20 ns, and by 10% from 0.40 to 0.35 ns, for 1-day arc solutions and 10-day arc solutions, respectively. Moreover, different precise products from three International GNSS Service (IGS) analysis centers were also evaluated. Even though different IFCB handling schemes were adopted in GLONASS satellite clock estimation, our numerical results showed that international time transfer on the basis of estimating IFCB for each GLONASS satellite better than the other two processing schemes. To achieve high-precision GLONASS-only PPP-based international time transfer, it is highly recommended to estimate IFCB for each GLONASS satellite.
资助项目	National Natural Science Foundation of China[41104021] ; National Natural Science Foundation of China[11173026] ; National Natural Science Foundation of China[11703033] ; National R&D Infrastructure and Facility Development Program of China[DKA2017-12-02-24]
WOS关键词	MAPPING FUNCTION GMF ; CHANNEL BIASES ; COMBINING GPS ; MODEL ; VIEW
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000442864900044
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National R&D Infrastructure and Facility Development Program of China ; National R&D Infrastructure and Facility Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National R&D Infrastructure and Facility Development Program of China ; National R&D Infrastructure and Facility Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National R&D Infrastructure and Facility Development Program of China ; National R&D Infrastructure and Facility Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National R&D Infrastructure and Facility Development Program of China ; National R&D Infrastructure and Facility Development Program of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/11666]
专题	中国科学院国家授时中心
通讯作者	Ge, Yulong; Cao, Xinyun
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Precise Positioning & Timing Technol, Xian 710600, Shaanxi, Peoples R China 3.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China 4.Wuhan Univ, Shool Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China 5.East China Normal Univ, 500 Dongchuan Rd, Shanghai 200241, 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,Qin, WeiJin,Cao, Xinyun,et al. Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer[J]. APPLIED SCIENCES-BASEL,2018,8(8):19.
APA	Ge, Yulong,Qin, WeiJin,Cao, Xinyun,Zhou, Feng,Wang, Shengli,&Yang, Xuhai.(2018).Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer.APPLIED SCIENCES-BASEL,8(8),19.
MLA	Ge, Yulong,et al."Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer".APPLIED SCIENCES-BASEL 8.8(2018):19.