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Integrity Monitoring of PPP-RTK Positioning; Part I: GNSS-Based IM Procedure

文献类型：期刊论文

作者Wang, Kan2,3; El-Mowafy, Ahmed1; Qin, Weijin2,3; Yang, Xuhai2,3
刊名REMOTE SENSING
出版日期2022
卷号14期号:1页码:25
关键词integrity monitoring PPP-RTK ionosphere GNSS protection level
DOI10.3390/rs14010044
英文摘要Nowadays, integrity monitoring (IM) is required for diverse safety-related applications using intelligent transport systems (ITS). To ensure high availability for road transport users for in-lane positioning, a sub-meter horizontal protection level (HPL) is expected, which normally requires a much higher horizontal positioning precision of, e.g., a few centimeters. Precise point positioning-real-time kinematic (PPP-RTK) is a positioning method that could achieve high accuracy without long convergence time and strong dependency on nearby infrastructure. As the first part of a series of papers, this contribution proposes an IM strategy for multi-constellation PPP-RTK positioning based on global navigation satellite system (GNSS) signals. It analytically studies the form of the variance-covariance (V-C) matrix of ionosphere interpolation errors for both accuracy and integrity purposes, which considers the processing noise, the ionosphere activities and the network scale. In addition, this contribution analyzes the impacts of diverse factors on the size and convergence of the HPLs, including the user multipath environment, the ionosphere activity, the network scale and the horizontal probability of misleading information (PMI). It is found that the user multipath environment generally has the largest influence on the size of the converged HPLs, while the ionosphere interpolation and the multipath environments have joint impacts on the convergence of the HPL. Making use of 1 Hz data of Global Positioning System (GPS)/Galileo/Beidou Navigation Satellite System (BDS) signals on L1 and L5 frequencies, for small- to mid-scaled networks, under nominal multipath environments and for a horizontal PMI down to 2x10(-6), the ambiguity-float HPLs can converge to 1.5 m within or around 50 epochs under quiet to medium ionosphere activities. Under nominal multipath conditions for small- to mid-scaled networks, with the partial ambiguity resolution enabled, the HPLs can converge to 0.3 m within 10 epochs even under active ionosphere activities.
WOS关键词AUSTRALIA
资助项目Chinese Academy of Science (CAS) "Light of West China" Program[XAB2018YDYL01] ; Chinese Academy of Science (CAS) "Light of West China" Program[XAB2019A06] ; National Natural Science Foundation of China[12073034] ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links"[DP 190102444]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
出版者MDPI
WOS记录号WOS:000751815700001
资助机构Chinese Academy of Science (CAS) "Light of West China" Program ; Chinese Academy of Science (CAS) "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Chinese Academy of Science (CAS) "Light of West China" Program ; Chinese Academy of Science (CAS) "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Chinese Academy of Science (CAS) "Light of West China" Program ; Chinese Academy of Science (CAS) "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Chinese Academy of Science (CAS) "Light of West China" Program ; Chinese Academy of Science (CAS) "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links" ; Australian Research Council-discovery project "Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links"
源URL[http://210.72.145.45/handle/361003/13922]  
专题国家授时中心_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.Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6845, Australia
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Kan,El-Mowafy, Ahmed,Qin, Weijin,et al. Integrity Monitoring of PPP-RTK Positioning; Part I: GNSS-Based IM Procedure[J]. REMOTE SENSING,2022,14(1):25.
APA Wang, Kan,El-Mowafy, Ahmed,Qin, Weijin,&Yang, Xuhai.(2022).Integrity Monitoring of PPP-RTK Positioning; Part I: GNSS-Based IM Procedure.REMOTE SENSING,14(1),25.
MLA Wang, Kan,et al."Integrity Monitoring of PPP-RTK Positioning; Part I: GNSS-Based IM Procedure".REMOTE SENSING 14.1(2022):25.

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来源：国家授时中心

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