BDS3长期观测数据质量分析与性能评估  

Quality analysis and performance evaluation of BDS3 long-term observation data

作　　者：陈洪卫 施键亚 CHEN Hongwei;SHI Jianya(Geomatics Engineering Faculty,Kunming Metallurgy College,Kunming 650033,China;Kunming Natural Resources Comprehensive Survey Center,China Geological Survey,Kunming 650100,China)

机构地区：[1]昆明冶金高等专科学校测绘学院,昆明650033 [2]中国地质调查局昆明自然资源综合调查中心,昆明650100

出　　处：《测绘工程》2025年第2期56-63,74,共9页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(42102065)。

摘　　要：2020年6月23日BDS3全球组网成功并正式开通向全球提供服务,能够全面系统的评估BDS3的数据质量和定位性能。本文针对建成后的BDS3从数据完整率、数据利用率、周跳比、多路径误差、信噪比、SPP、DOP、基线解算8个方面进行系统分析,选取IGS建立的MGEX 5个测站自2020年6月23日—2022年11月1日共862 d的数据进行实验分析。结果表明,在数据利用率、数据完整率方面,BDS各频率之间相差不大,数据利用率都在99.9%以上,数据完整率都在99%以上,BDS3与BDS2相当,都能达到数据质量要求;在周跳比、多路径误差、信噪比、DOP、SPP、基线解算方面,BDS3整体优于BDS2。本研究为系统评估BDS3的观测数据质量和性能提供了方法支持。On June 23,2020,BDS3 global network was successfully established and officially opened to provide services worldwide.In order to comprehensively and systematically evaluate the data quality and positioning performance of BDS3,this article systematically analyzes the data integrity rate,data utilization rate,cycle slip ratio,multi-path error,signal-to-noise ratio,SPP,DOP,and baseline solution of BDS3 from eight aspects.The data from five stations established by IGS from June 23,2020 to November 1,2022 were selected for experimental analysis.The results show that there is little difference in data utilization rate and data integrity rate between BDS frequencies,with data utilization rates above 99.9%and data integrity rates above 99%.BDS3 is comparable to BDS2 in terms of data quality requirements.In terms of cycle hop ratio,multipath error,signal-to-noise ratio,DOP,SPP,and baseline calculation,BDS3 is overall superior to BDS2.This study provides methodological support for systematically evaluating the quality and performance of BDS3 observation data.

关 键 词：北斗三号 周跳比 多路径误差 信噪比 标准单点定位 精度衰减因子 基线解算 

分 类 号：P228[天文地球—大地测量学与测量工程]