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Airborne lidar technology set laser ranging technology, computer technology , inertial measurement unit and differential positioning technology in one , is a way to quickly get the new technology of high-precision three-dimensional ground information , and its active scanning such a way that it can not round-the-clock work , so affected by the weather , has broad prospects for development and a huge demand for applications in many fields of the Water Resources Planning , topographic mapping , 3D city modeling and environmental monitoring . This article first pointed out the characteristics of airborne laser radar technology applied to the significance and importance of the water industry , and then summing up the airborne laser radar technology research advances on the basis of the combination of water conservancy work , study based on LIDAR 3D point cloud digital elevation model data , the watershed vegetation parameters and reservoir area housing information extraction . Hydraulic Structures Engineering magnificent structure is relatively simple , the cross-sectional shape single feature , A dam profile information to rebuild hydraulic structures modeling methods , the main algorithm including the profile point cloud image grayscale processing , morphological processing , refinement of line and corner detection , and use the IDL language programming . Finally, the use of digital elevation models and orthophotos produced electronic sand table , and the construction and management , river training , irrigation and water conservancy design , for example , LIDAR technology engineering applications .
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