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Complicated electromagnetic environment simulation the situation visualization technology research

Author: YuanXinEn
Tutor: LiWeiQing
School: Nanjing University of Technology and Engineering
Course: Applied Computer Technology
Keywords: Virtualization Image Classification Radar Network Electromagnetic environment Voxelization
CLC: O441
Type: Master's thesis
Year: 2011
Downloads: 111
Quote: 0
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Abstract


With the rapid development of computer technology, visualization technology has made significant progress in various fields. The introduction of visualization technology to complicated electromagnetic environment simulation has become a hot issue in the research of virtual environment. The introduction of visualization technology to complicated electromagnetic environment simulation makes the electromagnetism posture of the entire system intuitionistic, flexible, and realistic, and has profound practical significance.The main contributions and highlighted ideas of this thesis are described as follows:First, the paper studied GIS theory and its software realization technology, and achieved two -dimensional and three-dimensional visualization in the complicated electromagnetic environment simulation including designing large-scale virtual environment depending on DEM, construction of terrain model, texture construction, texture mapping technology; and also including the technology and approach of 2D situation software.Second, the paper studied the basic thought and the algorithm flow of ISODATA classification algorithm. Using erdas imagine software the paper achieved image classification and disposes the classification result. The paper analyzed the shortcomings of traditional algorithm, and put forwarded to improved ISODATA algorithm in the cluster center and the weight of color space, and got clustering results.Third, in the complicated electromagnetic environment simulation the paper studied Radar coverage 3D visualization method. A new algorithm for estimation of radar shadow affected by 3D terrain is proposed based on parabolic equation theory and collision detection method.Forth, the paper studied a voxelization method of radar netting, and implemented the virtualization of radar netting. The paper designed a voxelization method of radar netting coverage and the method of selecting seed based on geometric constraints. A program was designed using the method and we achieved good results.Fifth, in this paper, based on the above research results presented, a specific project is designed. The paper focuses on the target track generation, the two and three-dimensional visualization and situation assessment of the radar network performance. This provides visualization tool for radar netting decision-making.This research results has been applied in the complex electromagnetic environment visualization system and was verified.

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CLC: > Mathematical sciences and chemical > Physics > Electromagnetics,electrodynamics > Electricity and Magnetism
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