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GPS-RTK技术在高速铁路施工测量中的应用
作者:王善良
来源:《城市建设理论研究》2013年第05期
摘要:随着国家对铁路等基础设施的投入,铁路建设进入了大发展时期,特别是高速铁路技术的应用,对测绘技术的要求更高,传统的测绘仪器已经不能满足现在的要求,因此GPS技术在高速铁路施工测量中得到了广泛的应用。而在GPS技术中,RTK实时动态测量技术也以其强大的技术优势获得了越来越广泛的应用。本文首先介绍了GPS-RTK技术工作原理及精度,然后分析了其技术优势和缺点,最后重点结合京沪高铁项目探讨了GPS-RTK技术的要点。
关键词:GPS;RTK;施工测量;精度
Abstract: along with the country the railway infrastructure investment, railway construction into the big development period, especially the application of high-speed railway technology, surveying and mapping technology requirements higher, the traditional surveying and mapping instruments have already can't meet the requirements of the now, so the GPS technology in high speed railway construction survey has been widely used in the field. And in the GPS technology, RTK real-time dynamic measurement technology is also with its powerful technical advantage won more and more widely used. This paper first introduces the GPS-RTK technology principle and accuracy, and then analyzes its technological advantages and disadvantages, and finally focus on combining the Beijing-shanghai high iron project discusses GPS - of RTK technology points. Keywords: GPS; RTK; Construction survey; precision.
中图分类号:U238文献标识码:A 文章编号:2095-2104(2013) GPS-RTK技术简介
RTK 技术是GPS实时载波相位差分的简称。这是一种将GPS与数传技术相结合,实时处理两个测站载波相位观测量的差分方法,经实时解算进行数据处理,在1~2s的时间里得到高精度位置信息的技术。RTK 系统主要由基准站和流动站构成。如图所示, 基准站由GPS接收机及接收天线、无线电数据链电台及发射天线、直流电源等组成;流动站由GPS接收机、无线电数据链电台及天线、电子手簿等组成。 GPS-RTK系统构成图 (一)GPS-RTK的工作原理