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中文摘要：
利用高分辨率数字高程模型与数字正射影像、结合水文泥沙数据库，建立金沙江下游梯级水电站水文泥沙三维分析系统。提出一种改进的反距离加权算法，实现散点数据空间内插为二维数据场。结合空间分析算法与三维可视化技术，实现基于大场景的海量数据来水动态模拟与泥沙淤积分析等水文泥沙模拟分析功能，为金沙江下游梯级水电站的水文泥沙数据分析与管理提供最直观的数据分析和结果展示，为水沙调度提供快捷直观的平台。
英文摘要：
In this paper 3-D hydrologic sediment information analysis system for downstream cascaded hydropower stations in Jinsha River is built using high resolution DEM, DOM and hydrologic sediment database. An improved algorithm of inverse distance weighted averaging was proposed, with which scatter point data could be interpolated into 2-D scale field. Using spatial analysis algorithm and 3-D visualization techniques, the system can realize functions of the analysis and simulation for hydrologic sediment, such as sedimentation analysis and dynamic simulation about water income, based on mass data of large scene. It can not only provide result presentation and visual data analysis tool to hydrologic sediment data and downstream cascaded hydropower stations management in Jinsha River, but also offer a convenient platform to regulate water and sand.
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