全球定位系统2025，Vol.50Issue(3)：3-7,30,6.DOI:10.12265/j.gnss.2024199
基于北斗PPP-B2b和Galileo高精度服务的实时钟差解算评估
Real-time clock bias estimation evaluation based on BeiDou PPP-B2b and Galileo high accuracy service
摘要
Abstract
In response to the limited number of satellites available for precise point positioning(PPP)at the same time with BeiDou Navigation Satellite System(BDS)PPP-B2b and the lack of research on real-time clock offset estimation,an improved method based on the fusion of BDS PPP-B2b and Galileo high accuracy service(HAS)is proposed,and its real-time clock bias estimation performance is systematically evaluated.The method fuses the PPP state space representation(SSR)corrections from both satellite systems,significantly increasing the number of satellites available at the same epoch.Compared to the standalone PPP-B2b service,this approach demonstrates substantial improvements in the accuracy and stability of clock bias estimation.Experimental results show that,after a certain period of convergence,the method outperforms the ultra-fast(UTL)product provided by GFZ.Therefore,this work not only provides an effective way to enhance the practical application of PPP-B2b services but also offers new insights and experimental validation for the design and performance optimization of real-time time solutions in multi-system integration.关键词
PPP-B2b/高精度服务(HAS)/精密单点定位(PPP)/改正数融合/多系统融合/实时钟差解算评估Key words
PPP-B2b/high accuracy service(HAS)/precise point positioning(PPP)/PPP SSR fusion/multi-system integration/real-time clock offset estimation分类
天文与地球科学引用本文复制引用
欧文浩,刘筱琪,欧阳明俊,刘阳,朱祥维..基于北斗PPP-B2b和Galileo高精度服务的实时钟差解算评估[J].全球定位系统,2025,50(3):3-7,30,6.基金项目
国家重点研发计划(2021YFA0716500) （2021YFA0716500）
国家自然科学基金(61973328,91938301) （61973328,91938301）
深圳市基础研究重点项目(2020N259) （2020N259）
