In order to ensure the normal and stable operation of the CORS measurement system,and to provide users with accurate and reliable positioning services,CORS measurement system needs to be improved.RTK measurement technology makes the CORS system map-ping work simple and easy to operate,but each measurement operation set up the base station connection process is complex,affected by the ionospheric refraction,resulting in the base station coverage is small,the measurement accuracy is not high.In this paper,a design method of CORS high precision measurement system based on GPS measurement technology is proposed.This method first gives the CORS software and hardware prototype architecture based on GPS measurement technology,which uses the GPS measurement technology instead of the tra-ditional measurement method.The base station subsystem,the control center subsystem,the data communication subsystem,the user appli-cation subsystem to achieve the various types of GPS raw data acquisition,correction data for real -time,fast positioning,after the user po-sitioning or navigation and positioning measurement real -time synchronization integration goals,and with Trimble's GPS Tream and GPS Net software using the server,disk array to achieve the observation data storage,through the long -distance network GPS mobile station ambiguity resolution process to improve the accuracy of the base station.The experimental results show that the proposed method can meet the actual requirements of fast and accurate measurement,and realize the measurement data acquisition and fast transmission.%为了保证CORS测量系统的正常稳定运行,并能够对用户提供精度可靠地定位服务,需要对CORS 测量系统进行完善;当前采用基于RTK 测量技术的CORS系统测绘工作简单易操作,但每次测量作业架设基准站的连接过程复杂,受电离层折射影响,导致基准站的覆盖范围较小,测量精度不高;为此,提出一种基于GPS测量技术的CORS高精度测量系统设计方法;该方法首先给出满足测量需求的CORS软、硬件原型构架,采用 GPS测量技术代替传统测量方式,使用基准站子系统、控制中心子系统、数据通讯子系统、用户应用子系统来实现各种类型的GPS 原始数据采集、修正数据进行实时、快速的定位、事后用户定位或者导航定位等测量实时同步一体化目标,并借助Trimble的GPS Tream 和GPS Net 软件利用服务器、磁盘阵列实现观测数据存储,通过长距离网络GPS流动站整周模糊度的解算过程提高基准站的测量精度;实验结果表明,所提方法构建的CORS系统,能够满足快速精确测量的实际需求,实现测量数据的采集及快速传输.
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