机载LiDAR在河南省重点水库库区高精度DEM建立中的应用

本文以河南省7个重点水库为研究对象，以免像控方式获取库区机载LiDAR点云数据与正射影像数据，共飞行47个架次，获取数据总面积达950 km²，制作库区保护范围线2442 km、管理范围线1886 km；从设备选择、航飞参数设置、设备检校、点云数据滤波、点云精修、精度检查等几个关键环节进行论述，验证了该方法的可行性。研究结果表明，该方法在节省人力、物力、财力的同时，能获取库区高精度DEM成果，为库区管理范围与保护范围界限的划定及库区精细化管理提供了一种数据获取方法。

Application of generated high-precision DEM in key reservoir region of Henan province based on airborne LiDAR

This paper takes seven reservoirs in Henan province as research objects to obtain the image-free LiDAR cloud data and orthophotomy data in the reservoir region. A total of 47 sorties are flown with a total area of 950 km², the reservoir protection line of 2442 km and the management line of 1886 km.This paper discusses the selection of equipment, setting of flight parameters, equipment checking, filtering of point cloud data, point cloud refinishing, accuracy checking and other links.The results show that the method has the advantages of high accuracy and low cost compared with traditional methods.The method provides a new way to obtain data for delimitation and fine management of reservoir region boundaries.