气候变化领域集成服务门户(CCPortal): Featured services and performance of BDS-3

CCPortal

DOI	10.1016/j.scib.2021.06.013
	Featured services and performance of BDS-3
	Yang Y.; Liu L.; Li J.; Yang Y.; Zhang T.; Mao Y.; Sun B.; Ren X.
发表日期	2021
ISSN	20959273
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207642
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
推荐引用方式 GB/T 7714	Yang Y.,Liu L.,Li J.,et al. Featured services and performance of BDS-3[J],2021.
APA	Yang Y..,Liu L..,Li J..,Yang Y..,Zhang T..,...&Ren X..(2021).Featured services and performance of BDS-3.Science Bulletin.
MLA	Yang Y.,et al."Featured services and performance of BDS-3".Science Bulletin (2021).