Research And Implementation Of3D Visualization Technology Of Complex Electromagnetic Environment

With the rapid development of information technology, the shape of the modern battlefield has gradually shifted from the previous single mechanized warfare to the multidimensional battlefield under conditions of informatization, which plays an important role in determining the success or failure of the war. Electromagnetic warfare has already become an important part of the information warfare. Accurate description of the electromagnetic environment is conducive to combat commanders to make accurate judgments on electromagnetic situation, decide the development of war situation and make correct strategic decision. This paper develops a discussion and research centered on the visualization technology of the electromagnetic environment.The major work of this paper is to select appropriate electromagnetic propagation model to calculate the three dimensional electromagnetic environment data and fully demonstrate the characteristics of the electromagnetic environment using a variety of three-dimensional visualization technologies. The algorithms used in this paper to demonstrate the characteristics of the electromagnetic environment including isosurface extraction technique, tessellation,technique, depth peeling technique, volume data slice technique as well as volume rendering technique. Due to the time consumed by the calculation of the three-dimensional electromagnetic environment data field, traditional visualization techniques is difficult to achieve efficient results with good visual quality.This paper focuses on the combination of various visualization techniques and the improvement of the performance of some of these visualization techniques, to achieve a comprehensive display of three-dimensional electromagnetic environment. This paper proposed a hardware-accelerated isosurface extraction technique by combining three kinds of volumetric data subdivision methods and utilizing the geometry shader of modern GPU, effectively reducing the triangle patches needed to be rendered and complishing the task of isosurface extraction. Combined with the modern GPU’s tessellation capability, further improving the visual effects and the extraction speed of the extracted isosurface without increasing the storage space. Meanwhile, using the depth peeling technique to achieve multi-layer isosurface blend problem. In addition, this paper proposed an efficient volume data slice technique to demonstrate the characteristic of the electromagnetic environment data in multi-angle. Finally, using the ray-casting volume rendering technique comprehensively displaying the characteristic of a specific area of three-dimensional electromagnetic environment.