天津科技

天津科技 ›› 2025, Vol. 52 ›› Issue (11): 33-36.

• 基础研究 • 上一篇    下一篇

基于PPP-B2b实时单点定位精度分析

任家豪1,2,3,4, 余学祥1,2,3,4   

  1. 1.安徽理工大学空间信息与测绘工程学院 安徽淮南 232001;
    2.城市实景三维与智能安全监测安徽省联合共建学科重点实验室 安徽淮南 232001;
    3.安徽理工大学矿山采动灾害空天地协同监测与预警安徽普通高校重点实验室 安徽淮南 232001;
    4.安徽理工大学矿区环境与灾害协同监测煤炭行业工程研究中心 安徽淮南 232001
  • 收稿日期:2025-10-09 发布日期:2026-01-05

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

摘要： PPP-B2b信号是我国北斗三号（Beidou-3 Navigation Satellite System,BDS-3）卫星导航系统对外发布的高精度卫星定位服务信号。基于接收的BDS-3 PPP-B2b信号,实时改正信息,利用3个全球卫星导航系统（GNSS）服务组织IGS（International GNSS Services）观测站的BDS与GPS卫星观测数据,开展静态精密单点定位试验。采用扩展卡尔曼滤波算法进行实时解算,并将定位结果与WUM事后精密产品（武汉大学IGS分析中心或武汉IGS观测站提供的事后精密产品）进行对比。结果表明：PPP-B2b信号实时静态定位在东（E）、北（N）、天顶（U）3个方向达到cm级至dm级精度,且稳定性良好。尽管其精度略低于WUM事后精密产品,但验证了PPP-B2b服务可在无网络条件下为亚太地区提供实时高精度定位。

关键词: 北斗三号, PPP-B2b, 实时, 精密单点定位, 扩展卡尔曼滤波

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

中图分类号: