Research On Graphic Visualization Technology For Electromagnetic Data Based On OpenGL

In order to analysis the EMC problems in vehicular communication system, our studio had worked out the software named EMCANA emphasize on the calculation and visualization of electromagnetic parameters. Since the large quantity produced after the EMC analysis and computing hold up our realization to them, it is important finding its'order for the next stage of research. So we work out the problem through scientific visualization that is one of the focuses of modern computer graphics.My job is mostly related to the visualization module, which is pretty important for the whole work. In this paper, we study the methods about how to program in MFC with OpenGL to display the data of electromagnetic field.According to the analysis of system target and visualization requirement, the visualization module is developed by Visual C++ Program language of object oriented under OpenGL program environment. It realizes the three-dimension display of exterior-currency and antenna currency, the planar display of intensity in near electric field and the emulation orientation figure of each antenna. Based on OpenGL, setting light, making animation, 3D text displaying, object whirling and saving the graphic are discussed detailed in the paper.In the data-processing part, algorithm for scattering electrical current data, which is based on bi-directional interpolate idea is presented, and algorithm for scattering grid, which is based on centric-midpoint idea is used. In the visualization part that is the primary work I do, the OpenGL technology is applied.Though the post-processing of the software has good effects, we can do better if there's more time. First, since the main program of the software is writed by VB, there are some troubles in data translating and stability of the software. Second, the MOM method that we now used is not so good for the task. If it was substitute by the Fast More Poles Method and the post-processing part was improved according to it, we will get graphic well and truly than now.Used the result of this paper, we can get closer to the orderliness of electromagnetic field data.