Featured services and performance of BDS-3

Yuanxi Yang; Li Liu; Jinlong Li; Yufei Yang; Tianqiao Zhang; Yue Mao; Bijiao Sun; Xia Ren

doi:10.1016/j.scib.2021.06.013

Featured services and performance of BDS-3

Sci Bull (Beijing). 2021 Oct 30;66(20):2135-2143. doi: 10.1016/j.scib.2021.06.013. Epub 2021 Jun 13.

Authors

Yuanxi Yang¹, Li Liu², Jinlong Li², Yufei Yang², Tianqiao Zhang², Yue Mao³, Bijiao Sun³, Xia Ren³

Affiliations

¹ State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China; Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China. Electronic address: yuanxi_yang@163.com.
² Beijing Satellite Navigation Center, Beijing 100094, China.
³ State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China; Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China.

PMID: 36654271
DOI: 10.1016/j.scib.2021.06.013

Abstract

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.

Keywords: BeiDou constellation; Featured services; Inter-satellite link; Performance evaluation; Positioning, navigation and timing (PNT) service.

MeSH terms

Communication*
Earth, Planet*