车载LiDAR技术在高速公路改扩建勘测中的应用

Application of mobile LiDAR technology in survey of reconstruction and expansion of expressway

高速公路改扩建路面测量一直是困扰勘测设计工作者的难题。本文对车载LiDAR测量技术进行了研究,并以京藏高速公路改扩建项目为例,对车载激光雷达(LiDAR)技术应用于改扩建项目进行了分析。首先利用车载LiDAR系统进行高速公路沿线的点云数据采集,然后对点云数据进行预处理,并利用预先布设的地面靶标控制点对点云数据进行高精度的改正,最后对成果精度进行了分析,结果表明,车载LiDAR测量技术的成果精度完全能够满足高速公路改扩建勘测的精度要求。

Pavement measurement for highway reconstruction and expansion has always been a problem that plagued survey and design workers.In this paper,the vehicle-mounted light detection and ranging(LiDAR)measurement technology is researched and analyzed,and the application of the vehicle-mounted LiDAR technology in the reconstruction and expansion projects is explored by taking the Beijing-Tibet Expressway reconstruction and expansion project as an example.First,use the vehicle-mounted LiDAR system to collect point cloud data along the highway,then preprocess the point cloud data,and use the pre-arranged ground target control points to make high-precision corrections to the point cloud data.Finally,the accuracy of the results is analyzed.It shows that the accuracy of the vehicle-mounted LiDAR measurement technology can fully meet the accuracy requirements of the highway reconstruction and expansion survey.