TIANJIN SCIENCE & TECHNOLOGY

TIANJIN SCIENCE & TECHNOLOGY ›› 2025, Vol. 52 ›› Issue (11): 33-36.

• Basic Research • Previous Articles     Next Articles

Accuracy analysis of real-time single-point positioning based on PPP-B2b

REN Jiahao1,2,3,4, YU Xuexiang1,2,3,4   

  1. 1. School of Spatial Informatics and Geomatics Engineering,Anhui University of Science and Technology,Huainan 232001,China;
    2. Urban 3D Rea1 Scene and Intelligent Security Monitoring Joint Laboratory of Anhui Province,Huainan 232001,China;
    3. Key Laboratory of Aviation-aerospace-ground Cooperative Monitoring and Early Warning of Coa1 Mining-induced Disasters of Anhui Higher Education Institutes,Anhui University of Science and Technology,Huainan 232001,China;
    4. Engineering Research Center of Mining Area Environmental and Disaster Cooperative Monitoring,Anhui University of Science and Techno1ogy,Huainan 232001,China
  • Received:2025-10-09 Published:2026-01-05

Abstract: The PPP-B2b signal is a high-precision satellite positioning service signal released to the public by China’s Beidou-3 Navigation Satellite System （BDS-3）. Based on the received real-time correction information of BDS-3 PPP-B2b,static precise point positioning （PPP） tests were carried out using BDS and GPS satellite observation data from three International GNSS Service （IGS） stations. The extended Kalman filter algorithm was adopted for real-time solution,and the positioning results were compared with the WUM post-processing products. The results demonstrate that the PPP-B2b real-time static positioning achieves centimeter to decimeter-level accuracy in the East （E）,North （N）,and Up （U） directions with excellent stability. Although slightly less accurate than post-processing products,this service demonstrates the reliability of PPP-B2b in providing real-time,high-precision positioning in the Asia-Pacific region without a network connection.

Key words: BDS-3, PPP-B2b, real-time, precise point positioning, extended Kalman filter

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