Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region | |
Jin B(金彪)1,2; Chen, Shanshan1; Li, Dongjun1; Wang, Yuechen3; Takka, Elhadi4 | |
刊名 | SATELLITE NAVIGATION |
2021-07-26 | |
卷号 | 2期号:1 |
关键词 | SBAS Minimum variance estimation Ephemeris correction UDRE |
ISSN号 | 2662-9291 |
DOI | 10.1186/s43020-021-00045-z |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | Satellite Based Augmentation Systems (SBASs) improve the positioning accuracy and integrity by broadcasting to the civil aviation community the corrections and integrity parameters. A snapshot algorithm based on the minimum variance estimation is investigated in this study to calculate the satellite clock and orbit corrections. A chi-square test is performed on the remaining errors in the corrected ephemeris to guarantee the integrity. User Differential Range Error (UDRE) and scaling matrix contained in Message Type 28 are derived using the covariance information based on the assumption that one of the reference stations failed. A software package is developed and applied in the real data collected at 26 stations. International GNSS (Global Navigation Satellite System) Service (IGS) precise clock and orbit products are taken as the references to assess the accuracy of corrections. For both Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS), the range accuracy of 0.10 m can be achieved with the employment of the derived corrections. No obvious performance difference between GPS and BDS is found. UDREs for all visible satellites are generated with the maximum index of 12 and minimum index of 3. The geometric range differences calculated with IGS precise products and broadcast ephemeris are employed to assess the integrity of UDRE. It is found that the UDRE is able to bound the residuals with 99.9% confidence which meet the requirement of aviation users. With ionospheric delay corrected by Global Ionosphere Map (GIM), the positioning accuracy of 0.98 m with GPS corrections and 0.80 m with multi-constellation augmentation can be achieved which indicates a significant improvement of GPS standalone results. |
学科主题 | 天文学 ; 天体力学 ; 天体测量学 |
URL标识 | 查看原文 |
出版地 | CAMPUS, 4 CRINAN ST, LONDON, N1 9XW, ENGLAND |
资助项目 | Equipment Pre-research Foundation of China[61405180103] ; National Natural Science Foundation of China[41974041] |
WOS关键词 | WIDE-AREA AUGMENTATION ; CLOCK ; ORBIT ; WAAS |
WOS研究方向 | Engineering ; Remote Sensing ; Telecommunications |
语种 | 英语 |
出版者 | SPRINGERNATURE |
WOS记录号 | WOS:000751617600001 |
资助机构 | Equipment Pre-research Foundation of China[61405180103] ; National Natural Science Foundation of China[41974041] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25183] |
专题 | 云南天文台_应用天文研究组 |
通讯作者 | Jin B(金彪) |
作者单位 | 1.Space Star Technology Co., Ltd., Beijing 100194, China 2.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China. 3.UniStrong Science Technology Co., Ltd., Beijing 100176, China 4.Ecole Militaire Polytechnique, 16024 Alger, Algeria |
推荐引用方式 GB/T 7714 | Jin B,Chen, Shanshan,Li, Dongjun,et al. Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region[J]. SATELLITE NAVIGATION,2021,2(1). |
APA | Jin B,Chen, Shanshan,Li, Dongjun,Wang, Yuechen,&Takka, Elhadi.(2021).Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region.SATELLITE NAVIGATION,2(1). |
MLA | Jin B,et al."Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region".SATELLITE NAVIGATION 2.1(2021). |
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