基于逆向RTD技术的实时Web巡检系统关键技术研究与实现  

Research on the Key Technology of Real- Time Web Inspection System Based on Inverse RTD

作　　者：丁旭[1] 申丽丽[2,3] 曹伟[1] 

机构地区：[1]天津市测绘院,天津300381 [2]精密工程与工业测量国家测绘地理信息局重点实验室,湖北武汉430079 [3]武汉大学测绘学院,湖北武汉430079

出　　处：《测绘与空间地理信息》2014年第10期78-81,共4页Geomatics & Spatial Information Technology

基　　金：精密工程与工业测量国家测绘地理信息局重点实验室开放基金项目(PF2011-24)资助

摘　　要：鉴于GPS实时伪距差分(RTD)技术在城市巡检应用中不能将信息实时传回控制中心,无法实现数据共享,巡检路线监控不足,本文研究基于CORS的逆向RTD技术。该技术在原有CORS系统和手持机之间构架中间服务器,中间服务器代替手持机接收差分信息并进行差分解算,计算结果通过无线通信技术发回手持机;无差分功能的手持机增加双向通信模块,接收解算结果同时将巡检点的属性信息上传服务器,内业人员通过Web平台实时访问获取中间服务器中记录的巡检信息。实验表明,该技术具有内外业信息实时交互和共享,无差分功能手持机降低成本等优点,应用于城市巡检中可以避免常规技术的不足。The traditional GPS RTD applied in city inspection has shortage that inspection information can＇t be returned the control center real- time,data can＇t be shared and inspection trajectory can＇t be monitored,so this paper proposes the technology of inverse RTD based on CORS. This technology add the Mid- Server between CORS system and PDA,Mid- Server receives differential information and gets the result of differential calculation,then the result should be returned to PDA; The PDA without differential function should increase bidirectional communication module to receive the result returned from Mid- Server and upload the attribute information of inspection points,indoor workers can get information real- time through web platform. Testing results indicates that this technology has the advantage that information can exchange in real- time and non- differential PDA is cheaper than traditional PDA,so it＇s application can avoid the shortage of traditional technology in city inspection.

关 键 词：CORS 逆向RTD Web巡检系统 中间服务器 

分 类 号：P2[天文地球—测绘科学与技术] TP39[自动化与计算机技术—计算机应用技术]