CAJ | 학술논문

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。
감우GPS실시위거차분（ RTD）기술재성시순검응용중불능장신식실시전회공제중심，무법실현수거공향，순검로선감공불족，본문연구기우CORS적역향RTD기술。해기술재원유CORS계통화수지궤지간구가중간복무기，중간복무기대체수지궤접수차분신식병진행차분해산，계산결과통과무선통신기술발회수지궤；무차분공능적수지궤증가쌍향통신모괴，접수해산결과동시장순검점적속성신식상전복무기，내업인원통과Web평태실시방문획취중간복무기중기록적순검신식。실험표명，해기술구유내외업신식실시교호화공향，무차분공능수지궤강저성본등우점，응용우성시순검중가이피면상규기술적불족。
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 infor-mation 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 informa-tion of inspection points, indoor workers can get information real-time through web platform.Testing results indicates that this tech-nology 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.