摘要
为解决山区型水库数据底板获取难题,提升水库数据底板产品质量,降低作业风险,提出利用机载LiDAR技术获取水库数据底板的方法。以乌东德水库为例,基于野外实测数据分析了机载LiDAR生产DOM(数字正射影像)与点云的精度。结果表明:通过机载LiDAR技术获取的DOM中误差为±0.04 m;点云平面、高程中误差均小于±0.15 m;数据精度满足山区型水库数据底板成果要求。机载LiDAR技术可生产DEM(数字高程模型),DOM,DLG(数字线划图),DSM(数字表面模型)产品,丰富成果表达;同时可有效降低野外作业安全风险,提升外业工作效率。研究成果可为数字孪生流域数据底板建设提供技术参考。
In order to solve the difficult problem of data baseboard construction of reservoir in mountain area, improve the product quality of data baseboard and reduce the operation risk, a method of Airborne LiDAR to obtain the data baseboard was proposed.Then we took Wudongde Reservoir as an example to analyze accuracy of DOM and laser-point cloud obtained by Airborne LiDAR.The results showed that mean square error of DOM was less than ±0.05 m, mean square error of laser-point cloud in plane and elevation were less than ±0.15 m, the accuracy of data met the requirement of data baseboard of reservoir in mountain area.We could obtain DEM,DOM,DLG,DSM by Airborne LiDAR which could effectively reduce the safety risk of field work and improve the efficiency of field work.The research results could provide technical reference for the construction of digital twin watershed data baseboard.
作者
马玉婷
赵林东
石永恩
谈语
冯国正
MA Yuting;ZHAO Lindong;SHI Yongen;TAN Yu;FENG Guozheng(Upper Changjiang River Bureau of Hydrological and Water Resources Survey,Bureau of Hydrology,Changjiang Water Resources Commission,Chongqing 400020,China)
出处
《水利水电快报》
2022年第9期26-30,共5页
Express Water Resources & Hydropower Information
基金
中国三峡建工集团有限公司项目(JGAJ0421004)。
