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Generation of DFMC SBAS corrections for BDS-3 satellites and improved positioning performances
Zhao, Liqian1,2; Hu, Xiaogong1; Tang, Chengpan1; Cao, Yueling1; Zhou, Shanshi1; Yang, Yufei3; Liu, Li4; Guo, Rui4
2020-08-01
Source PublicationADVANCES IN SPACE RESEARCH
ISSN0273-1177
Volume66Issue:3Pages:702-714
AbstractThe next-generation satellite-based augmentation system (SBAS) will follow the dual-frequency multi-constellation (DFMC) protocol and broadcast satellite clock-ephemeris corrections and integrity information via GPS L5-like signals to improve the accuracy and integrity for GNSS dual-frequency users. BeiDou Navigation Satellite System (BDS)-3 B1C/B2a dual-frequency users will obtain a higher positioning accuracy using DFMC clock-ephemeris corrections. This paper focuses on an approach for the generation of DFMC SBAS corrections and its preliminary results. Analyzing the signal-in-space ranging error characteristics of BDS-3 satellites reveals that it is impossible to obtain orbits that are more accurate than the broadcast orbits using regionally distributed SBAS monitoring stations. Therefore, a novel DFMC SBAS correction generation approach for BDS-3 satellites is proposed in which only clock offset corrections are calculated. The effectiveness of the proposed approach is validated using measurements from mainland China. By using clock corrections only, B1C/B2a dual-frequency users can obtain the best accuracy. The results of the BDS-3 B1C/B2a dual-frequency positioning experiment show that the user equivalent ranging error is reduced from 0.59 m to 0.37 m with clock corrections but is reduced to only 0.43 m with the addition of clock-ephemeris corrections. With clock corrections only, the 95% positioning errors are reduced from 3.57 m to 1.53 m and from 3.79 m to 2.24 m in the horizontal and vertical directions, respectively, indicating a 48% reduction in positioning errors compared to users without SBAS corrections; however, the error reduction is only 40% with clock-ephemeris corrections. (C) 2020 COSPAR. Published by Elsevier Ltd. All rights reserved.
KeywordSatellite-based augmentation system Dual-frequency multi-constellation Satellite clock-ephemeris corrections Signal-in-space ranging error User equivalent ranging error
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1016/j.asr.2020.04.032
WOS KeywordAUGMENTATION ; ACCURACY ; ORBIT ; EGNOS
Language英语
Funding ProjectNational Natural Science Foundation of China[41574029] ; National Natural Science Foundation of China[41674041] ; National Natural Science Foundation of China[41874039] ; National Natural Science Foundation of China[41804030]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaEngineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS SubjectEngineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS IDWOS:000566575700007
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82095
Collection中国科学院国家天文台
Corresponding AuthorZhao, Liqian
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Informat Engn Univ, Zhengzhou, Peoples R China
4.Beijing Nav Ctr, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Liqian,Hu, Xiaogong,Tang, Chengpan,et al. Generation of DFMC SBAS corrections for BDS-3 satellites and improved positioning performances[J]. ADVANCES IN SPACE RESEARCH,2020,66(3):702-714.
APA Zhao, Liqian.,Hu, Xiaogong.,Tang, Chengpan.,Cao, Yueling.,Zhou, Shanshi.,...&Guo, Rui.(2020).Generation of DFMC SBAS corrections for BDS-3 satellites and improved positioning performances.ADVANCES IN SPACE RESEARCH,66(3),702-714.
MLA Zhao, Liqian,et al."Generation of DFMC SBAS corrections for BDS-3 satellites and improved positioning performances".ADVANCES IN SPACE RESEARCH 66.3(2020):702-714.
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