Accelerated SF-PPP Convergence of BDS-3 B1 Band by Wideband Signal Observations

Yunhan Qi, Zheng Yao, Mingquan Lu

Peer Reviewed

Abstract: The third-generation BeiDou Navigation Satellite System (BDS-3) officially provided Positioning, Navigation, and Timing (PNT) services to global users in 2020. BDS-3 B1 band not only retains the B1I signal broadcast at 1561.098 MHz, but also broadcast a new B1C signal with advanced modulation at 1575.42 MHz, which provides more various options for the PNT service of BDS-3 B1 band. In terms of high-precision positioning, although the Single Frequency Precise Point Positioning (SF-PPP) of the B1 band can provide centimeter-level positioning results, it requires serval hours of convergence time, which cannot meet the requirements of real-time applications. Therefore, in order to accelerate the convergence speed of B1 SFPPP, unlike existing methods that focus on reducing the impact of atmospheric delays, this paper fully explores the excellent potential of the B1 wideband signal composed of B1I and B1C signals in anti-thermal noise and anti-multipath, and innovatively introduces the B1 wideband signal observations with higher precisions than B1I and B1C observations to B1 SF-PPP for the first time. The real-data experiment results show that, compared with the B1 SF-PPP using B1I and B1C observations, the B1 SF-PPP using B1 wideband signal observations has a significantly reduced convergence time, which is shortened by 43.2% and 33.7% respectively when convergence threshold is 2.5 dm, demonstrating the effectiveness of B1 wideband signal observations in accelerating B1 SF-PPP convergence.
Published in: Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023)
September 11 - 15, 2023
Hyatt Regency Denver
Denver, Colorado
Pages: 2494 - 2503
Cite this article: Qi, Yunhan, Yao, Zheng, Lu, Mingquan, "Accelerated SF-PPP Convergence of BDS-3 B1 Band by Wideband Signal Observations," Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023), Denver, Colorado, September 2023, pp. 2494-2503. https://doi.org/10.33012/2023.19193
Full Paper: ION Members/Non-Members: 1 Download Credit
Sign In