陕西水利Issue(2)：100-102,3.
基于无人机激光雷达遥感的水下DEM提取研究
Research on Underwater Dem Extraction Based on UAV Lidar Remote Sensing
吴永江 1李伟 1李博瀚 1吴传彦1
作者信息
- 1. 昭通市水利水电勘测设计研究院,云南昭通 657000
- 折叠
摘要
Abstract
In recent years,unmanned aerial vehicle(UAV)technology has emerged in the field of earth science.It can generate high-precision digital elevation models(DEM)at low cost and become an alternative to satellite data of small river basins.The underwater DEM of Sayu River was quantitatively extracted using the lidar system carried by the Mapper5000 UAV.The results show that the water surface and underwater point clouds obtained by the optical system have good separation,and the average height deviation of the water surface height of the point cloud fitting is only 5.3 mm;the dense underwater point cloud generates an underwater DEM of Sayu River with a spatial resolution of 0.3 m.The verification accuracy of the DEM is R2 of 0.97,and the MAE and RMSE are 0.59 and 1.12 m respectively,indicating that the underwater DEM obtained in this study is reliable.The research conclusions can provide a scientific basis and decision-making support for the management of the Sayu River and the accounting of the ecological service function of the basin.关键词
洒渔河/水下DEM/无人机/激光雷达Key words
Sayu River/underwater DEM/drone/lidar分类
大气科学引用本文复制引用
吴永江,李伟,李博瀚,吴传彦..基于无人机激光雷达遥感的水下DEM提取研究[J].陕西水利,2025,(2):100-102,3.
