DOI: 10.1016/j.scib.2021.06.013
论文题名: Featured services and performance of BDS-3
作者: Yang Y. ; Liu L. ; Li J. ; Yang Y. ; Zhang T. ; Mao Y. ; Sun B. ; Ren X.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
语种: 英语
中文关键词: BeiDou constellation
; Featured services
; Inter-satellite link
; Performance evaluation
; Positioning, navigation and timing (PNT) service
英文关键词: Geostationary satellites
; Orbits
; Satellite links
; Beidou constellation
; Communication service
; Featured service
; Intersatellite links
; Message communication
; Performance
; Performances evaluation
; Positioning accuracy
; Positioning, navigation and timing service
; Short message
; Radio navigation
英文摘要: BeiDou Global Navigation Satellite System (BDS-3) not only performs the normal positioning, navigation and timing (PNT) functions, but also provides featured services, which are divided into geostationary orbit (GEO) and medium earth orbit (MEO) satellite-based featured services in this paper. The former refers to regional services consisting of the regional short message communication service (RSMCS), the radio determination satellite service (RDSS), the BDS satellite-based augmented service (BDSBAS) and the satellite-based precise point positioning service via B2b signal (B2b-PPP). The latter refers to global services consisting of the global short message communication service (GSMCS) and the MEO satellite-based search and rescue (MEOSAR) service. The focus of this paper is to describe these featured services and evaluate their performances. The results show that the inter-satellite link (ISL) contributes a lot to the accuracy improvement of orbit determination and time synchronization for the whole constellation. Compared with some other final products, the root mean squares (RMS) of the BDS-3 precise orbits and broadcast clock are 25.1 cm and 2.01 ns, respectively. The positioning accuracy of single frequency is better than 6 m, and that of the generalized RDSS is usually better than 12 m. For featured services, the success rates of RSMCS and GSMCS are better than 99.9% and 95.6%, respectively; the positioning accuracies of single and dual frequency BDSBAS are better than 3 and 2 m, respectively; the positioning accuracy of B2b-PPP is better than 0.6 m, and the convergence time is usually smaller than 30 min; the single station test shows that the success rate of MEOSAR is better than 99%. Due to the ISL realization in the BDS-3 constellation, the performance and capacities of the global featured services are improved significantly. © 2021 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170476
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Geo-Information Engineering, Xi'an, 710054, China; Xi'an Research Institute of Surveying and Mapping, Xi'an, 710054, China; Beijing Satellite Navigation Center, Beijing, 100094, China
Recommended Citation:
Yang Y.,Liu L.,Li J.,et al. Featured services and performance of BDS-3[J]. Science Bulletin,2021-01-01