GNSS数据质量分析  

Quality Analysis of GNSS Data

作　　者：李晓光[1,2] 程鹏飞[2] 成英燕[2] 万军[3] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000 [2]中国测绘科学研究院,北京100830 [3]建设综合勘察研究设计院有限公司,北京100007

出　　处：《测绘通报》2017年第3期1-4,8,共5页Bulletin of Surveying and Mapping

基　　金：国家重点研发计划(2016YFB0501405);国家自然科学基金(41374014);国家公益性行业专项;测绘地理信息公益性行业科研专项经费项目(201512011)

摘　　要：GNSS载波相位观测值受观测噪声和接收机钟跳等的影响,其周跳检验量序列随时间发生变化。为构造稳健而又敏感的周跳检验量,需对不同系统的卫星数据质量进行分析,而多路径效应和信噪比则是影响观测数据质量的重要指标。本文重点分析了GPS与BDS卫星数据的多路径效应及信噪比,并提出了一种接收机时钟的钟跳探测方法,即采用双频相位观测值的O-C值,通过消电离层线性组合进行钟跳探测。The GNSS carrier phase observation value is affected by noise and the receiver clock jump, the cycle slip test sequence changes over time.To construct robust and sensitive test of cycle slip, satellite data of different system quality need to be analyzed, and the multi-path effect and signal-to-noise ratio are important indexes of the quality about observation data. This paper focuses on the analysis of the multipath effect and the signal-to-noise ratio of GPS and BDS satellites data; and proposed a method of receiver clock jump detection, which uses the O-C about dual frequency phase observation value and performs clock jump detection by using the ionosphere free linear combination .

关 键 词：GNSS 多路径 信噪比 钟跳 MGEX 

分 类 号：P228.4[天文地球—大地测量学与测量工程]