无人机载LiDAR在山林地区公路定测中的应用研究

Research on the Application of UAV-borne LiDAR in Highway Location Survey in Mountain and Forest Areas

为了提高公路工程纵横断面测绘的效率,基于无人机载LiDAR技术在某山林地区的新建公路设计项目中,使用大众可消费的国产机载LiDAR获取真彩色点云数据,经Terrasolid软件分类得到地面点数据采集纵横断面数据。为了检验机载LiDAR测量的断面数据精度,外业采用GPS-RTK的手段测量纵横断面数据,通过实验分析,结果表明无人机载LiDAR在山林地区纵横断面生产中可以提高工作效率,但是应注意特殊环境的内业采集方式,并结合外业实测进行数据检核,以保证成果精度满足工程要求。

In order to improve the efficiency of the vertical and horizontal section surveying and mapping of highway engineering,based on UAV-borne LiDAR technology in a new highway design project in a mountain forest area, the mass-consumable domestic airborne LiDAR is used to obtain true color point cloud data, and the vertical and horizontal section data of ground point data are obtained by Terrasolid software classification. In order to verify the accuracy of the cross-sectional data measured by airborne LiDAR, the field uses GPS-RTK to measure the longitudinal and transverse cross-sectional data. Through experimental analysis, the results show that UAV-borne LiDAR can improve the work efficiency in the vertical and horizontal cross-sectional production of mountain forest areas, but attention should be paid in collection methods of inside operation in special environments, and the data check should be combined with field surveys for data verification, to ensure that the accuracy of the results meets the engineering requirements.