1.武汉大学卫星导航定位技术研究中心,湖北珞珈实验室,湖北 武汉,430079
2.国际计量局,巴黎 塞夫勒,92310
3.中国科学院精密测量科学与技术创新研究院精密大地测量与定位全国重点实验室,湖北 武汉,430077
辜声峰,博士,教授,主要从事多系统 GNSS 数据处理、多源传感器导航和电离层建模与监测研究。gsf@whu.edu.cn
收稿:2026-09-18,
纸质出版:2026-11-05
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辜声峰,朱家熹,毛飞宇,等.面向全球快速厘米级服务的GNSS数据处理研究进展[J].武汉大学学报(信息科学版),2026,51(11):2263-2274.
GU Shengfeng,ZHU Jiaxi,MAO Feiyu,et al.Progress in GNSS Data Processing for Global Rapid Centimeter-Level Services[J].Geomatics and Information Science of Wuhan University,2026,51(11):2263-2274.
辜声峰,朱家熹,毛飞宇,等.面向全球快速厘米级服务的GNSS数据处理研究进展[J].武汉大学学报(信息科学版),2026,51(11):2263-2274. DOI:10.13203/j.whugis20260351
GU Shengfeng,ZHU Jiaxi,MAO Feiyu,et al.Progress in GNSS Data Processing for Global Rapid Centimeter-Level Services[J].Geomatics and Information Science of Wuhan University,2026,51(11):2263-2274. DOI:10.13203/j.whugis20260351
北斗卫星导航系统(BeiDou navigation satellite system,BDS)是国家重要的时空信息基础设施,高精度定位与授时正逐步成为基础时空服务能力,实时精密产品是全球快速厘米级服务的重要支撑。随着实时高精度定位由传统精密单点定位(precise point positioning,PPP)向PPP-AR(PPP-ambiguity resolution)发展,利用相位偏差产品实现模糊度固定、加快定位收敛已成为实时精密服务的重要发展方向。系统介绍了武汉大学国际GNSS服务组织(international GNSS service,IGS)实时分析中心多GNSS实时精密产品处理模型与算法研究进展,重点阐述实时精密定轨、高稳定星地钟协同时间基准维持与协调世界时(coodinated universal time,UTC)溯源等关键方法,并在轨道、钟差产品基础上新上线多频相位偏差产品,支撑实时PPP-AR快速模糊度固定。产品评估结果表明,GPS、GLONASS、Galileo和BDS中地球轨道卫星实时轨道三维均方根分别为2.4、4.6、3.8和4.9 cm;UTC(
k
)频率驾驭使GPS、BDS-3和Galileo的UTC时间传递误差标准差分别降低58.4%、32.8%和76.2%;BDS-3多频相位偏差具有良好的连续性和稳定性。全球测站GPS/Galileo/BDS-3联合PPP-AR实验表明,初始化150 s后,水平和高程误差分别降至3.6 cm和9.9 cm,95%样本误差分别优于3.9 cm和8.6 cm。武汉大学IGS实时分析中心已形成涵盖轨道、钟差和信号偏差的多GNSS实时精密产品体系,实现了由PPP厘米级定位向PPP-AR快速厘米级定位服务拓展。
BeiDou is an important national spatiotemporal information infrastructure
and high-precision positioning and timing are becoming fundamental spatiotemporal services. Real-time precise products are essential for global rapid centimeter-level positioning. With the development from conventional precise point positioning (PPP) to PPP with ambiguity resolution (PPP-AR)
phase-bias products have become increasingly important for ambiguity fixing and fast convergence. This paper systematically presents the recent progress of multi-GNSS real-time precise product processing at the Wuhan University international GNSS service (IGS) real-time analysis center
focusing on real-time precise orbit determination
highly stable satellite-ground clock coordination and coodinated universal time (UTC) traceability
and newly introduced multi-frequency phase-bias products for real-time PPP-AR. Evaluation results show that the three-dimensional root mean square errors of real-time orbits for GPS
GLONASS
Galileo
and BDS medium earth orbit satellites are 2.4
4.6
3.8
and 4.9 cm
respectively. UTC(
k
)-based frequency steering reduces the standard deviati
on of UTC time-transfer errors for GPS
BDS-3
and Galileo by 58.4%
32.8%
and 76.2%
respectively. BDS-3 multi-frequency phase-bias products show good continuity and stability. Global GPS/Galileo/BDS-3 PPP-AR tests show that
after 150 s of initialization
horizontal and vertical errors reach 3.6 cm and 9.9 cm
with 95% of samples better than 3.9 cm and 8.6 cm. The IGS analysis center at Wuhan University has established a multi-GNSS real-time precise product system covering orbit
clock
and signal-bias products
extending real-time services from centimeter-level PPP to rapid centimeter-level PPP-AR.
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