基于IGS实时服务(RTS)的车载实时动态PPP系统及精度分析  

Real-Time Kinematic PPP System of In-vehicle Based on IGS Real-Time Service(RTS)and Its Accuracy Analysis

作　　者：张良[1] 姚宜斌[1,2,3] 刘磊 ZHANG Liang;YAO Yibin;LIU Lei(School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;Collaborative Innovation Center of Geospatial Technology,Wuhan 430079,China;Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,Wuhan 430079)

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]地球空间信息技术协同创新中心,湖北武汉430079 [3]武汉大学地球空间环境与大地测量教育部重点实验室,湖北武汉430079

出　　处：《测绘地理信息》2018年第5期38-41,共4页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41574028);国家重点研发计划资助项目(2016YFB0501803)

摘　　要：实时精密单点定位（precision point positioning,PPP）逐渐成为地学研究的重要手段。IGS（international GNSS service）实时服务（real-time service,RTS）产品的上线为实时精密单点定位提供了可能。为检验实时PPP在动态定位下的精度,设计了车载实时PPP系统并进行了野外定位实验。实验结果表明,进行实时动态PPP首先需要一段时间进行收敛,收敛以后车辆保持移动时,动态PPP定位精度与车辆静止时无明显变化。由于路边建筑或树木的遮挡,坐标精度会出现抖动情况。采用IGS01、IGS03、CLK15、CLK22、CLK52、CLK81和CLK90实时产品的定位精度相当,垂直精度大多在20cm以内,水平精度大多优于5cm。采用RTS进行车载实时动态PPP定位可以达到较高的定位精度,满足车载定位的需求。推荐采用IGS03和CLK90进行实时动态定位。Real-time precise point positioning（PPP）has gradually become an important approach of geoscience research.IGS real-time service（RTS）product provides the possibility for real-time PPP.In order to test the real-time PPP performance in kinematic positioning,we designed the vehicle-based real-time PPP system and carried out an outdoor experiment.Results show that the real-time kinematic PPP needs a period timeto converge.After the convergence stage,the kinematic PPP accuracy is in agreement with the static PPP.Due to the occlusion of buildings or trees,the accuracy of coordinates sometimes jumps lightly.The real time products（IGS01,IGS03,CLK15,CLK22,CLK52,CLK81 and CLK90）have similar positioning accuracy.The vertical accuracy is better than 20 cm,the level of accuracy is within 5 cm.Real-time PPP based vehicle with IGS RTS products can archive high positioning accuracy,and meet the demand of vehicle positioning.

关 键 词：实时服务(RTS) 实时PPP 车载定位 

分 类 号：P228[天文地球—大地测量学与测量工程]