PCO and hardware delay calibration for LEO satellite antenna downlinking navigation signals

doi:10.1088/1361-6501/ad48a2

	PCO and hardware delay calibration for LEO satellite antenna downlinking navigation signals
	Liu, Jiawei 1,3; Wang, Kan 1,2,3; El-Mowafy, Ahmed 4; Yang, Xuhai 1,2,3
	2024-08-01
发表期刊	MEASUREMENT SCIENCE AND TECHNOLOGY
ISSN	0957-0233
卷号	35 期号:8 页码:16
摘要	Augmentation of the Global Navigation Satellite System by low earth orbit (LEO) satellites is a promising approach benefiting from the advantages of LEO satellites. This, however, requires errors and biases in the satellite downlink navigation signals to be calibrated, modeled, or eliminated. This contribution introduces an approach for in-orbit calibration of the phase center offsets (PCOs) and code hardware delays of the LEO downlink navigation signal transmitter/antenna. Using the satellite geometries of Sentinel-3B and Sentinel-6A as examples, the study analyzed the formal precision and bias influences for potential downlink antenna PCOs and hardware delays of LEO satellites under different ground network distributions, and processing periods. It was found that increasing the number of tracking stations and processing periods can improve the formal precision of PCOs and hardware delay. Less than 3.5 mm and 3 cm, respectively, can be achieved with 10 stations and 6 processing days. The bias projections of the real-time LEO satellite orbital and clock errors can reach below 3 mm in such a case. For near-polar LEO satellites, stations in polar areas are essential for strengthening the observation model.
关键词	low earth orbit (LEO) global navigation satellite system (GNSS) phase center offset (PCO) position, navigation and timing (PNT) hardware delay
资助者	International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council
DOI	10.1088/1361-6501/ad48a2
关键词[WOS]	ORBIT DETERMINATION ; GNSS
语种	英语
资助项目	International Partnership Program of the Chinese Academy of Sciences[021GJHZ2023010FN] ; National Time Service Center, Chinese Academy of Sciences (CAS)[E167SC14] ; National Natural Science Foundation of China[12073034] ; Australian Research Council[DP240101710]
资助者	International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Multidisciplinary ; Instruments & Instrumentation
WOS记录号	WOS:001228246800001
出版者	IOP Publishing Ltd
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14621
专题	高精度时间传递与精密测定轨研究室
通讯作者	Wang, Kan
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian, Peoples R China 4.Curtin Univ, Sch Earth & Planetary Sci, Perth, Australia
推荐引用方式 GB/T 7714	Liu, Jiawei,Wang, Kan,El-Mowafy, Ahmed,et al. PCO and hardware delay calibration for LEO satellite antenna downlinking navigation signals[J]. MEASUREMENT SCIENCE AND TECHNOLOGY,2024,35(8):16.
APA	Liu, Jiawei,Wang, Kan,El-Mowafy, Ahmed,&Yang, Xuhai.(2024).PCO and hardware delay calibration for LEO satellite antenna downlinking navigation signals.MEASUREMENT SCIENCE AND TECHNOLOGY,35(8),16.
MLA	Liu, Jiawei,et al."PCO and hardware delay calibration for LEO satellite antenna downlinking navigation signals".MEASUREMENT SCIENCE AND TECHNOLOGY 35.8(2024):16.