高精度直升机机载LiDAR在高速公路改扩建勘测中的应用可行性研究

Study on Feasibility for Application in Freeway Reconstruction and Extension Surveying by Using High-accuracy Helicopter LiDAR

机载LiDAR在公路勘测方面的用途日益广泛。该文对直升机机载LiDAR在高速公路改扩建中的应用技术路线可行性进行了研究论证,从地面控制测量、点云数据获取、点云数据处理、成果应用等多个方面进行了阐述,通过分析LiDAR点云数据在5种不同地面控制点布设方案校正下的点云数据精度,论证了利用地面控制点对直升机机载LiDAR点云数据进行平面和高程校正的可行性。

Airborne LiDAR has been widely used in highway survey.In this paper,the feasibility of the application of the helicopter LiDAR in the reconstruction and extension of the highway has been studied.Ground control measurement,point cloud data acquisition,point cloud data processing and the application of results have been introduced.By analyzing the accuracy of point cloud data under the correction of 5 different ground control points,the LiDAR point cloud data have been analyzed,and the ground control has been demonstrated.Feasibility of plane point and elevation correction for airborne LiDAR point cloud data based on system points have been verified.