基于剖分网格的电磁环境可视化  

Electromagnetic environment visualization based on subdivision grids

作　　者：胡豪杰 方胜良 HU Haojie;FANG Shengliang(Space Engineering University,Beijing 101400,China)

机构地区：[1]航天工程大学,北京101400

出　　处：《兵器装备工程学报》2023年第3期295-302,共8页Journal of Ordnance Equipment Engineering

基　　金：173******基础加强计划项目(2020-JCJQ-ZD-071)。

摘　　要：针对电磁场三维重建效率不高、可视化效果不佳的问题,本文中从数据组织方式、可视化绘制算法、可视化内容3个方面进行了研究。建立了基于剖分网格的电磁场数据组织模型,提高了对电磁场数据的组织管理能力。在可视化绘制方法上,采用不同粒度网格组织的数据相互转换查找等值面的方式,有效避免了面绘制的经典算法Marching Cubes算法在查找等值面过程中的大量无效数据立方体遍历问题,与Marching Cubes算法相比提升了绘制效率30%以上。为增强数据可视化表达的细节特征,通过对经纬高3个维度的剖分实现了对电磁环境内部细节特征的可视化表达,并辅以交互操作实现对空间范围内不同高度和经纬度电磁场强分布的可视化表达。Focusing on the problems of inefficient 3D reconstruction and poor visualization effect of electromagnetic fields,this paper studies from three aspects,including data organization,visualization drawing algorithm and visualization content.The organization model of the electromagnetic field data is established based on subdivision grids to improve the ability of organizing and managing the electromagnetic field data.In terms of visualization drawing algorithm,mutual conversion of the data organized by grids of different grain sizes to find the isosurface effectively avoids the problem of a large number of invalid data cube traversal in this process through Marching Cubes algorithm,the classical algorithm of surface rendering.Compared with the Marching Cubes algorithm,this method improves the drawing efficiency by more than 30%.In order to enhance the detailed features of data visualization,the detailed internal features of the electromagnetic environment are visualized by subdivision of the three dimensions of longitude,latitude and height,and the electromagnetic field intensity distribution of different longitude,latitude and height in the spatial range is also visualized through the supplementation of interactive operations.

关 键 词：剖分网格 电磁环境 可视化 面绘制 Marching Cubes算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]