GPS在高速铁路精密控制测量毕业论文.doc

摘 要 为了改变铁路事业长期低水平徘徊，缓解铁路运输的紧张状况，大幅度扩大旅客运输和货物运输能力，现阶段，我国大力倡导发展高速铁路。高速铁路具有速度快、价格公道、运输量大等特点，同时保证安全和舒适性也是发展高速铁路的主要目标。高速列车运营安全和舒适性的首要条件是轨道的高平顺性，它依赖于轨道铺设和养护维修过程中的高质量，则需要应用精密的测量技术。 由于任何一种测量工作都会产生误差，所以必须采取一定测量程序和方法，以防止误差的积累。为了解决这个问题，在实际测量中，我们一般先在测区建立控制网，以此为基础，分别从各个控制点开始施测附近的碎部点。因此为了保证高速铁路运营安全和舒适性，亟待我们建立一套系统、合理的精密控制网作业和数据处理模式，为后期线路施工和维护提供保障，进而保证轨道的高平顺性。 本文以高速铁路精密控制测量相关资料、规范和理论知识为指导，结合实例，对高速铁路精密工程控制建网技术若干问题进行分析和研究。 关键词：全球定位系统，精密控制测量  ABSTRACT In order to change the railway business has stayed at a Long-term and improves the stress status of railway transportation and substantial increases of passenger and cargo transport capacity, nowadays, our country attaches great importance to the development of high-speed railway. With the fast、fair prices features and high freight volume,it is also a important goal of development of high-speed railway is safety and comfort. The primary condition for High-speed train’s safety and comfort is high ride comfort orbit which depends on the track laying and maintenance of high-quality process, and needs the application of sophisticated measurement techniques. Because of the work of any kind of measurement will have errors, it must be taken to a certain measurement procedures and methods to prevent the accumulation of those errors. To solve this problem, we surveyed the general area before the establishment of control network, and measured detail points nearby from the beginning of each control point respectively in practical measurement. Therefore, in order to ensure safe and comfortable of high-speed railway operational，we need to set up a systematic, reasonable sophisticated control network and data-processing mode of operation for construction and maintenance of the latter railway line, is to provide protection to ensure orbit high ride comfort. With the information, standard and theoretical knowledge of high-speed railway’s precision control survey of high-speed railway and examples, this paper analysis and research on a number of