QZSS对GPS伪距单点定位精度影响分析  

Analysis of the Effect of QZSS on the Positioning Accuracy of GPS Pseudorange Single Point

作　　者：郭凯 李金乾 马琛 GUO Kai;LI Jinqian;MA Dichen(The Fourth Topographic Surveying Brigade,Ministry of Natural Resources,Harbin 150025,China;Changjiang Yichang Waterway Bureau,Yichang 443000,China)

机构地区：[1]自然资源部第四地形测量队,黑龙江哈尔滨150025 [2]长江宜昌航道局,湖北宜昌443000

出　　处：《测绘与空间地理信息》2022年第3期117-119,125,共4页Geomatics & Spatial Information Technology

摘　　要：为评估准天顶系统(QZSS系统)对GPS兼容频率伪距单点定位精度的影响,本文基于IGS跟踪站实测数据,分析了QZSS系统对GPS单频、双频、三频伪距单点定位精度的影响。经分析发现,QZSS系统能有效改善GPS卫星可见数与卫星空间几何构型,改善率都在25%以上,同时QZSS能明显提升GPS伪距单点定位精度,对于GPS单频和三频伪距单点定位精度提升量在4%以内,对于GPS双频伪距单点定位精度提升量在25%以内。In order to evaluate the effect of the QZSS system on the positioning accuracy of GPS-compatible frequency pseudorange single-point positioning,this paper analyzes the effect of the QZSS system on the GPS single-frequency,dual-frequency,and tri-frequency pseudorange single-point positioning accuracy based on the measured data of the IGS tracking station.After analysis,it is found that the QZSS system can effectively improve the GPS satellite visible number and the satellite space geometric configuration,and the improvement rate is more than 25%.At the same time,QZSS can significantly improve the GPS pseudorange single-point positioning accuracy.For GPS single-frequency and triple-frequency pseudorange,the single point positioning accuracy improvement is within 4%,and the GPS double frequency pseudorange single point positioning accuracy improvement is within 25%.

关 键 词：QZSS GPS 兼容频率 伪距单点定位 

分 类 号：P228.4[天文地球—大地测量学与测量工程]