电子学报Issue(12)：2409-2414,6.DOI:10.3969/j.issn.0372-2112.2014.12.011
基于图形电磁学雷达散射截面计算方法之改进
I mprove ment of Radar Cross Section Co mputing Method Based on GRECO
摘要
Abstract
Based on 3-D graphics hardware accelerator and Z-Buffer technique,graphic electromagnetic computing (GRE-CO)algorithm can efficiently resolve blanking difficulties and visualization problems of traditional electromagnetic calculation pro-cedures .Therefore,GRECO algorithm is considered as one of the most efficient methods to acquire characteristics of high-frequency and electricity large-sized target .However,there are disadvantages of traditional GRECO algorithm,as follows:normal vector of tar-get cannot be extracted accurately,calculation accuracy is affected by screen resolution greatly and multiple reflections cannot be calculated directly .As a result,traditional GRECO algorithm is limited for this reason and cannot be used in some region widely . The traditional GRECO is improved in this paper,so that the geometric information of pixel can be extracted accurately .Technique of off-screen rendering based on frame buffer object (FBO)is used for improving the algorithm .Then the normal vector of target can be obtained precisely and effectively .Traditional discriminated method of facet pairs is improved by using area projection/physi-cal optics to adapt the computation of RCS multiple scattering .关键词
雷达截面积/图形电磁学/多次反射/帧缓存对象/离屏渲染Key words
radar cross section (RCS)/graphical electromagnetic computing/multi-reflection/FBO/off-screen rendering分类
信息技术与安全科学引用本文复制引用
崔俊伟,杨飏..基于图形电磁学雷达散射截面计算方法之改进[J].电子学报,2014,(12):2409-2414,6.基金项目
国家自然科学基金 （）
