GPS在公路控制测量中的应用论文摘要

摘要

全球定位系统（GPS）具有传统测量手段所不能比拟的优越性，其观测简便，定位精度高，等特点使全球定位系统在工程测量领域方面的应用有着广阔的前景。而在公路测量中，随着公路等级的不断提高，传统测量手段很难满足道路工程优质，准确，快速的要求，将GPS定位系统引进公路工程测量中，也是公路勘测的一个必然趋势。

本文主要研究了GPS技术在公路控制测量中的应用。首先介绍了全球定位系统的定位原理以及其可能的误差来源；然后讨论了公路测量长度变形问题；接着介绍了GPS控制网的技术设计，包括控制网设计的一般原则，基准设计和图形设计，同时阐述了应用GPS静态定位技术布设公路首级平面控制网以及应用GPS动态技术对首级控制网进行加密的整个作业流程，最后介绍了应用GPS静态测量技术通过联测已知水准点布设高程控制网，并对高程拟合的方法做了介绍。通过工程实例表明，运用GPS技术进行公路控制测量提高了测量精度和效率，GPS在公路控制测量中具有广泛的应用前景。

关键词：GPS技术；公路控制测量；长度变形；控制网；高程拟合

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Abstract

The Global Positioning System (GPS) own the superiority that the traditional measuring method can not match.Its has the characteristics like simple observation high precision positioning that make it has the application of a broad prospect in the engineering fields .And in highway measurement, along with the continuous impro vement of the highway level, the traditional measuring method is hard to meet the requirements that engineering quality, accurate, fast requirement.so in the highway engineering survey,introducing the Global Positioning System,is also a trend of highway survey.

This paper mainly studies how to use the GPS technology in the the highway control application.At first, introduced the global positioning system and its possible the orientation theory and error sources;Then discussed highway measurement length deformation;The second,introduces the GPS control network technology design, including the design principles of control nets, benchmark design and graphic design; And expatiates the static positioning technology control network head highway plane arrangement and application of dynamic technology GPS control network of head encrypt the whole operation process static positioning. At last, the paper introduces the application of static measurement technology through the league GPS measure known level point layout, and presented elevation control nets to elevation fitting method.Through engineering examples show that, GPS technology control measurement highway improve the measuring precision and efficiency, GPS in highway control measurement has a broad prospect of application.

Key words：GPS technology；Highway control measure；Length deformation；

Control network； Elevation fitting

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