iGMAS多品牌监测接收机数据质量分析

为了验证全球卫星导航系统(GNSS)接收机研制状态，全面确认全球连续监测评估系统(iGMAS)监测站接收机性能，为后续GNSS接收机数据的质量评定做出贡献. 基于iGMAS多品牌接收机比测实验，通过对多个品牌监测接收机多系统不同频点观测数据质量(完整率、多路径、周跳比、观测噪声)及零基线相对定位精度进行统计分析，综合评估了接收机工作性能及其观测数据的质量. 结果显示:iGMAS监测站接收机数据质量及其性能满足相应标准；数据完整率和多路径方面，国内品牌接收机与国外水平接收机基本相当；在周跳比、伪距和载波相位噪声及零基线相对定位精度方面，国产监测接收机明显优于国外监测接收机. 

iGMAS multi-brand monitoring receiver data quality analysis

In order to verify the development status of GNSS receiver, fully confirm the receiver performance of the international GNSS monitoring and assessment system (iGMAS) monitoring station, and make contributions to the subsequent Global Navigation Satellite System (GNSS) receiver data quality assessment. Based on iGMAS multi-brand receiver comparative measurement experiment, the receiver performance and the quality of observation data were evaluated comprehensively by statistical analysis of the observation data quality (integrity rate, multipath, cycle jump ratio, observation noise) and the relative positioning accuracy of zero base line at different frequency points of multi-brand monitoring receivers. The results show that the data quality and performance of iGMAS monitoring station meet the corresponding standards. In terms of data integrity rate and multipath, the domestic brand receiver is basically equivalent to the foreign horizontal receiver. In terms of cycle jump ratio, pseudo-range, carrier phase noise and relative positioning accuracy of null base line, the domestic monitoring receiver is obviously better than the foreign monitoring receiver.