一种基于车载激光雷达技术的既有线测量方法

摘要

在既有铁路维护、管理及二线建设等工作中，为再现铁路的既有线形，需要实施既有线测量。传统的既有线测量主要依靠人工上道测量方法。随着铁路大幅提速后，车辆行车速度快、发车密度高，传统的既有线测量方法测量效率低、安全风险大的问题日益凸显。本文提出将车载激光雷达技术用于铁路既有线测量，设计了既有线车载激光雷达数据采集方案，研究了既有线信息提取方法、既有线形拟合方法等关键问题。工程应用表明，该方法可满足既有线测量要求，具有工作效率高、对铁路运营干扰少等优势。%In the maintenance,management and the second line construction of the existing railway,we must carry out the repetition measurement of existing railway lines to present the existing alignment of the railway again.The traditional meas-urement methods of existing railway lines mainly rely on manual measurement.With accelerating significantly,the railway vehicles drive at high speed and high density.The traditional measurement methods of existing railway lines have low effi-ciency and a big increasing security risk.This paper firstly proposed that vehicle-borne LIDAR was used in repetition meas-urement of existing railway lines.Secondly,the vehicle-borne LIDAR data collection program of the existing railway lines was designed.Finally,the key problems of the information extraction method as well as linear fitting of existing lines were researched.Engineering applications showed that the method could meet the requirements of measuring the existing railway lines,with high efficiency and less interference for railway operations and other advantages.