基于多区多求解器的金属-介质复合目标电磁散射特性分析  

Analysis of Electromagnetic Scattering Characteristics for Metal-Medium Composite Target Based on Multi-domain and Multi-solver

作　　者：刘露 邓世豪 米晓林 江明[2,6] 杨毅 LIU Lu;DENG Shihao;MI Xiaolin;JIANG Ming;YANG Yi(The 38th Research Institute of China Electronics Technology Group Corporation Limited,Hefei 230088,Anhui,China;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,Sichuan,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China;National Key Laboratory of Scattering and Radiation,Shanghai 200438,China;Key Laboratory of Information Science of Electromagnetic Waves,Fudan University,Shanghai 200433,China;Institute of Electronic and Information Engineering in Guangdong,University of Electronic Science Technology of China,Dongguan 523808,Guangdong,China)

机构地区：[1]中国电子科技集团有限公司第三十八研究所,安徽合肥230088 [2]电子科技大学电子科学与工程学院,四川成都611731 [3]上海无线电设备研究所,上海201109 [4]散射辐射全国重点实验室,上海200438 [5]复旦大学电磁波信息科学教育部重点实验室,上海200433 [6]电子科技大学广东电子信息工程研究院,广东东莞523808

出　　处：《制导与引信》2024年第3期46-53,共8页Guidance & Fuze

基　　金：国家自然基金面上项目(62071103);广东省基础与应用基础研究基金(2022A1515010483)。

摘　　要：在导弹类金属-介质复合目标电磁散射特性求解过程中,采用常规迭代求解方法存在难以收敛以及内迭代边界积分区域重复求解的问题。针对该问题,在传统有限元边界积分区域分解法(finite element boundary integral domain decomposition method,FE-BI-DDM)的基础上,采用了更为灵活的多区多求解器的方法(multi domain multi solver method,MDMSM)。该方法对导弹类金属-介质复合目标中难以收敛的金属区域,使用快速直接求逆的方法求解,由于可以使用独立的网格模型进行电磁建模,避免了内迭代部分的模型重复建立过程,从而大幅减少了整体模型求解时间。实验结果表明:所提方法可以在相同计算精度的条件下,以不过多增加内存空间为前提,大幅缩短了导弹类目标的金属-介质复合模型的电磁求解时间。该方法为开展导弹类目标特性分析提供了一条可行的技术途径。In the process of solving the electromagnetic scattering characteristics of missile metal-medium composite target,the conventional iterative solution method is difficult to converge,and the internal iterative boundary integral region is repeatedly solved.Aiming at the problem,a more flexible multi-domain and multi-solver method(MDMSM)based on the traditional finite element boundary integral domain decomposition method(FE-BI-DDM)was adopted.The metal region which was difficult to converge in the missile metal-medium composite target could be solved by this fast and direct inverse method.In this way,an independent grid model was used for electromagnetic modeling,so the model establishment process of the internal iteration part was avoided,and the overall model solving time was greatly reduced.The experimental results show that the proposed method can greatly shorten the electromagnetic solving time of metal-medium composite model for missile targets under the condition of the same calculation accuracy and without increasing too much memory space.The proposed method provides a feasible technical way to analyze the characteristics of missile targets.

关 键 词：有限元边界积分区域分解法 多区多求解器方法 金属-介质复合目标 迭代求解 快速直接求解 

分 类 号：O441[理学—电磁学]