40工程勘察GeotechnicalInvestigation&Surveying2023年第3期实时精密单点定位系统实现与精度分析刘俊钊,李浩军(同济大学测绘与地理信息学院,上海200092)摘要:GNSS应用场景的多元化趋势使得用户对高精度实时定位服务的需求不断增加,以实时精密单点定位(Real-TimePrecisePointPositioning,RT-PPP)为代表的高精度定位技术已成为当前卫星导航定位领域的研究热点。本文基于VisualStudio2019平台设计了一款实时精密单点定位解算程序MGPSS,实现了RTCM数据流解码、坐标计算、结果输出、残差分析等功能。采用SSR改正信息对多个IGS观测站进行RT-PPP分析实验,结果表明,各测站NEU方向收敛至1m的平均时间为29min,最终收敛精度达厘米级,E方向精度0.043m,N方向0.032m,U方向0.066m,平面精度0.054m。关键词:RT-PPP;RTCM数据流;SSR改正;精度分析;VisualStudio中图分类号:P228文献标识码:ADevelopmentandaccuracyanalysisofreal-timeprecisepointpositioningsystemLiuJunzhao,LiHaojun(CollegeofSurveyingandGeo-Informatics,TongjiUniversity,Shanghai200092,China)Abstract:ThediversifiedtrendofGNSSapplicationscenarioshascauseduserstocontinuouslyincreasethedemandforhigh-precisionreal-timepositioningservices.High-precisionpositioningtechnologyrepresentedbyReal-TimePrecisePointPositioning(RT-PPP)hasbecomethecurrentsatellitenavigationresearchhotspotsinthefieldofpositioning.BasedontheVisualStudio2019platform,thispaperdesignsareal-timeprecisionsingle-pointpositioningsolutionprogramMGPSS,whichrealizesthefunctionsofRTCMdatastreamdecoding,coordinatecalculation,resultoutput,residualanalysisandsoon.UsingSSRcorrectioninformationtoperformRT-PPPanalysisexperimentsonmultipleIGSobservationstations,theresultsshowthattheaverageconvergencetimeofeachstationintheNEUdirectionisabout29minutes,andthefinalconvergenceaccuracyreachescentimeterlevel.TheaccuracyintheEdirectionis0.043m,andtheNdirectionis0.032m,theUdirectionis0.066m,andtheplaneaccuracyis0.054m.Keywords:RT-PPP;RTCMdatastream;SSRcorrection;accuracyanalysis;VisualStudio收稿日期:2022-01-14;修订日期:2022-03-08基金项目:国家自然科学基金项目(41974025,42174019).作者简介:刘俊钊(1998-),男(汉族),四川达州人,硕士.0前言全球卫星导航系统(Glo...
