| As one of the strong convective weather systems, hail has some serious effects on people's life and production with a tremendous destructive power. Current researches on Hail usually focus on recognition and forecast part, and the actions for hail suppression are mainly based on experience. Therefore, this paper made some researches about hail monomer on the basis of recognition, and a software development on suppression work and 3D display of monomer by using MFC in VC6.0 development environment. The work has high practical value in the paper.The research on suppression work, as the core of the paper, is composed by the following parts:1. Reading the radar base data, and changing into corresponding reflectivity map, then determining the area of the hail monomer.2. Generating the best cutting line. In the paper, two algorithms of best cutting line were proposed, and then generate the radar reflectivity cross section (RCS) by radial and azimuth neighborhood combined with vertical interpolation. It provided an effective object for subsequent work.3. Extracting vault. Through the analysis of the information of section, dig out the relevant rules to realize the judge and position of vault based on the best section.4. Determining scattered hail point. On the basis of extracting effectively vault, rely on some rules to realize determining the scattered hail point, and provide evidence for artificial hail suppression.The program results showed that the reflectivity section generated by best cutting line had a good hierarchy and it could reflect internal structure of hail monomer at vertical direction. And it also had a better result on extracting vault and determining scattered hail point.Another work in this paper is about the three-dimension visualization of hail monomer by using the OpenGL three-dimension graphic processor interface with MFC. The purpose of the work is to restore the monomer to the shape in the real space-time to improve the accuracy of weather forecast. |
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