| abstract |
The present invention constructs the digital elevation model data of the land using an air laser survey (LiDAR), and builds the numerical elevation model data of the water depth using a multi-beam echo sounder (MBES), and then measures the LiDAR survey and MBES survey values. By performing interpolation performance verification of TIN interpolation, interpolating numerical elevation model data of different survey values based on numerical data of survey values with higher accuracy, and integrating them, the land part and the depth part coexist together. To build a precise numerical elevation model forn n n According to the method of the present invention, it is possible to construct a numerical elevation model of a region where the land and the depth co-exist together more quickly and accurately with less manpower. Therefore, by constructing the bottom sediment management system based on the established digital elevation model, it is possible to prevent inadvertent dredging work and establish flood prevention measures in connection with the flood prediction system. Also, the digital elevation model can be used as terrain analysis data using 3D image.n n n n Digital elevation model, aviation laser instrument, multibeam acoustic echo sounder, performance verification |