无人机和无人船测绘技术在库容曲线计算中的应用

Application of mapping technology based on UAV and unmanned ship in reservoir capacity curve calculation

从水库库区数据模型建立、数字地表模型(DSM)提取高程点的数据采集、三角网构建数字高程模型(DEM)原理探讨等方面,简化DSM数据转化成DEM数据的过程,为水库库容复核计算提供一种高效率、高精度的技术手段。在样本水库库容复核项目的应用中,通过该方法成功获取0.5m等高距的等高线成果,提高了水库库容曲线的计算精度,可为同类项目提供参考依据。

The process of transforming DSM data into DEM data is simplified from the aspects of the establishment of reservoir data model, the data acquisition scheme of extracting elevation points by digital surface model(DSM), and the principle of constructing digital elevation model(DEM)production contour line by triangulation, which provides an efficient and highprecision technical means for reservoir capacity review and calculation. In the application of the sample reservoir capacity review project, the contour results of 0.5m contour distance are successfully obtained through this method, which improves the calculation accuracy of the reservoir capacity curve, and can provide a reference basis for similar projects in other areas.