Research And Implement On 3D Modeling And Visualization Of The Radar Maximum Detection Range

The visualization of electromagnetic information is an important part of virtual battlefield environment, and the visualization of radar information, especially the radar detection range, is more important. In this paper the visualization of radar detection range is discussed and the implementation method of the 3D visualization of radar maximum detection range is given. In this method, the effect of most real environment factors is considered with parabolic equation. Finally, the method of modeling and rendering 3D model of radar maximum detection range is proposed and implemented. The result of experiment shows that this method can visualize radar maximum detection range and can help users to cognize the radar detection situation truly in the battlefield environment. Including:1,The mathematical model of the radar wave path loss which is used for 3D visualization of radar maximum detection range is discussed and given.In the paper, it begins with the wave parabolic equation to discuss the parabolic equation on the application of radar. The modeling of environment and terrain and the impact of these factors on radar wave transmission is discussed. And then the mathematical model of the radar wave path loss which is considered with refraction, troposcatter, absorption and terrain factor is given. And it sets up the data source for modeling radar detection range exactly.2,The method of 3D modeling radar maximum detection range based on connecting 2D contour is studied and proposed.The method of discretization of the radar wave path loss data is studied with the data organization. And a new method of discretizing the radar wave path loss space data to section grid discrete data is given. The contour generating algorithm is studied, and by studying the characteristic of radar section grid discrete data, a new exclusive contour generating method is given with the path loss threshold to solve the exclusive contour generating problem. At last, the algorithm of reconstructing 3D model from 2D contours is studied, and a new method of reconstructing 3D model of radar maximum detection range from 2D contours is given to solve the problem of the vertexes correspondence and unequal number of vertexes between two neighbor contours by copying the vertexes.3,The method of 3D visualization of radar maximum detection range is studied and implemented.The smoothness and normal computing method of 3D model of radar maximum detection range is studied, and a new method of computing vertex normal vector which considers the contiguous polygons shape effects to vertex normal vector is given. At last, some enhancement visualization effect methods of radar maximum detection range in the virtual battlefield environment is studied. And this paper gives three visualization methods, including blend, slice and dynamic scan effect.In the end, we realize an integrated visualization system of radar maximum detection range, and visualize the 3D model of radar maximum detection range in the virtual battle environment. And the result is satisfying.