机载激光雷达技术在资源县抽水蓄能电站地形图测量中的应用

Application of Airborne Lidar Technology in Topographic Survey of Ziyuan Pumped Storage Power Station

抽水蓄能电站的主要作用是为了存储更多的电能,通常为了达到这样的目的,电站的选址所在区域通常高差较大,植被覆盖率高。这样的区域,通行条件大多较差,对于采用常规方式进行测量难度大,成本高,同时精度也很难满足要求。近年来,机载激光雷达测量技术的发展,对于这类问题的解决起到了良好的作用。笔者结合实际项目生产实践经验,从测区分析、航飞设计、点云及影像数据获取、数据预处理、激光点云分类、航摄影像处理各个方面进行阐述,通过最终的精度分析,证明了机载激光雷达技术在大高差、植被覆盖率高的区域,仍然能够达到地形测绘的精度要求,对于未来的水利水电航空摄影测量,拥有广阔的应用前景。

The main function of pumped storage power station is to store more electric energy,usually in order to achieve this purpose,the site of the power station is usually located in the area with a large height difference and high vegetation coverage.In such areas,the traffic conditions are mostly poor,and making it difficult and costly measure by conventional methods,and the accuracy is also difficult to meet the requirements.In recent years,the development of airborne Lidar photogrammetry technology has played a good role in solving these problems.Combined with the practical experience of the actual project production,this paper expounds various aspects of survey area analysis,flight design,point cloud and image data acquisition,data preprocessing,point cloud classification,and aerial image processing.Through the final accuracy analysis,it proves that airborne lidar technology can still meet the accuracy requirements of terrain surveying and mapping in areas with large altitude difference and high vegetation coverage.It has a broad application prospect for water conservancy and hydropower aerial photogrammetry in the future.