Research on Absolute Calibration of GNSS Receiver Delay through Clock-Steering Characterization

doi:10.3390/s20216063

	Research on Absolute Calibration of GNSS Receiver Delay through Clock-Steering Characterization
	Zhu, Feng 1,2,3; Zhang, Huijun 1,2,3; Huang, Luxi 1,2,3; Li, Xiaohui 1,2,3; Feng, Ping 1,2,3
刊名	SENSORS
	2020-11-01
卷号	20 期号:21 页码:14
关键词	receiver delay absolute calibration clock-steering pulse-per-second (PPS) TtC (time-to-code) TtP (time-to-phase)
DOI	10.3390/s20216063
英文摘要	The receiver delay has a significant impact on global navigation satellite system (GNSS) time measurement. This article comprehensively analyzes the difficulty, composition, principle, and calculation of GNSS receiver delay. A universal method, based on clock-steering characterization, is proposed to absolutely calibrate all types of receivers. We use a hardware simulator to design several experiments to test the performance of GNSS receiver delay for different receiver types, radio frequency (RF) signals, operation status and time-to-phase (TtP). At first, through the receivers of Novatel and Septentrio, the channel delay of Septentrio is 2 ns far lower than 65 ns for Novatel, and for the inter-frequency bias of GLONASS L1, Septentrio tends to increase within 10 ns compared with decreasing of Novatel within 5 ns. Secondly, a representative receiver of UniNav-BDS (BeiDou) is chosen to test the influence of Ttp which may be ignored by users. Under continuous operation, the receiver delay shows a monotone reduction of 10 ns as TtP increased by 10 ns. However, under on-off operation, the receiver delay represents periodic variation. Through a zero-baseline comparison, we verifies the relation between receiver delay and TtP. At last, the article analyzes instrument errors and measurement errors in the experiment, and the combined uncertainty of absolute calibration is calculated with 1.36 ns.
资助项目	National Natural Science Funds of China[11703032] ; China National Key Research and Development Plan[2016YFB0501804]
WOS关键词	TIME TRANSFER ; GPS
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000589219200001
资助机构	National Natural Science Funds of China ; National Natural Science Funds of China ; China National Key Research and Development Plan ; China National Key Research and Development Plan ; National Natural Science Funds of China ; National Natural Science Funds of China ; China National Key Research and Development Plan ; China National Key Research and Development Plan ; National Natural Science Funds of China ; National Natural Science Funds of China ; China National Key Research and Development Plan ; China National Key Research and Development Plan ; National Natural Science Funds of China ; National Natural Science Funds of China ; China National Key Research and Development Plan ; China National Key Research and Development Plan
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/12090]
专题	中国科学院国家授时中心
通讯作者	Zhu, Feng
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Technol & Engn Ctr Space Utilizat, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Key Lab Precise Nav & Timing Technol, Xian 710600, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Feng,Zhang, Huijun,Huang, Luxi,et al. Research on Absolute Calibration of GNSS Receiver Delay through Clock-Steering Characterization[J]. SENSORS,2020,20(21):14.
APA	Zhu, Feng,Zhang, Huijun,Huang, Luxi,Li, Xiaohui,&Feng, Ping.(2020).Research on Absolute Calibration of GNSS Receiver Delay through Clock-Steering Characterization.SENSORS,20(21),14.
MLA	Zhu, Feng,et al."Research on Absolute Calibration of GNSS Receiver Delay through Clock-Steering Characterization".SENSORS 20.21(2020):14.