| 高频RCS预估中判别阴影区域的并行算法 |
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| 引用本文： | 张月园,刘志伟,张晓燕,刘颖婷,何姗. 高频RCS预估中判别阴影区域的并行算法[J]. 井冈山大学学报(自然科学版), 2013, 0(4): 41-45 |
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| 作者姓名： | 张月园 刘志伟 张晓燕 刘颖婷 何姗 |
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| 作者单位： | [1]华东交通大学国际学院,江西南昌330013 [2]华东交通大学信息工程学院,江西南昌330013 [3]毫米波国家重点实验室,江苏南京210096 |
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| 基金项目： | 基金项目：国家自然科学基金项目（61261005）：毫米波国家重点实验室（K201326）：江西省科技厅青年基金项目（20122BAB211018）;江西省教育厅青年基金项目（GJJ13321） |
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| 摘 要： | 利用物理光学方法预估高频雷达散射截面(RCS)时,需要判别目标表面的阴影区域。本文提出了一种基于树型结构的多重阴影判别算法,将判断面元是否被面元遮挡转变为判断面元是否被分组遮挡,极大地降低了计算复杂度。与此同时,引入并行技术,将基于树型结构的多重阴影遮挡算法并行化,进一步节省计算时间。数值算例表明,基于树型结构的多重阴影判别算法与传统的阴影判别方法相比,在保证计算精度一致的前提下,计算效率更加高效。
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| 关 键 词： | 电磁场 高频散射 并行遮挡判别 计算电磁学 物理光学 |
PARALLELED MULTIPLE SHADOW RECOGNITION ALGORITHM FOR EVALUATION OF HIGH FREQUENCY RCS |
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| ZHANG Yue-yuan,LIU Zhi-wei,ZHANG Xiao-yan,LIU Ying-ting,HE Shan. PARALLELED MULTIPLE SHADOW RECOGNITION ALGORITHM FOR EVALUATION OF HIGH FREQUENCY RCS[J]. Journal of Jinggangshan University(Natural Sciences Edition), 2013, 0(4): 41-45 |
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| Authors: | ZHANG Yue-yuan LIU Zhi-wei ZHANG Xiao-yan LIU Ying-ting HE Shan |
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| Affiliation: | 1. International School, East China Jiaotong University, Nanchang, Nanchang, Jiangxi 330013, China; 2. School of Information Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013, China; 3. State Key Laboratory of Millimeter Wave, Southeast University, Nanjing, Jiangsu 210096, China) |
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| Abstract: | Using physical optics method to evaluate high frequency radar cross section （RCS）, the shadow recognition is required and time consuming. A tree structure based method is proposed for multiple shadow recognition. Judging whether a facet is obstructed by another facet is replaced by judging whether a facet is obstructed by another sub-group. The computational complexity is able to be reduced greatly by this method. Furthermore, the parallel technique is introduced. The computation time can be saved by the paralleled tree-base multiple shadow recognition algorithms. Numerical results demonstrate that the proposed method is more efficient than traditional method. |
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| Keywords: | electromagnetic field high frequency scattering paralleled shadow recognize computational electromagnetic physical optics |
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