基于远场叠加公式的箔条阵列雷达散射特性研究  

Radar Scattering Characteristics of Chaff Arrays based on Far-field Superposition Formula

作　　者：刘鑫 王雪松[1] 孟刚 刘佳琪 李猛猛[3] Liu Xin;Wang Xue-song;Meng Gang;Liu Jia-qi;Li Meng-meng(National University of Defense Technology,Changsha,410073;National Key Laboratory of Science and Technology on Test Physics&Numerical Mathematics,Beijing,100076;Nanjing University of Science and Technology,Nanjing,210094)

机构地区：[1]国防科技大学,长沙410073 [2]试验物理与计算数学重点实验室,北京100076 [3]南京理工大学,南京210094

出　　处：《导弹与航天运载技术（中英文）》2022年第5期148-151,共4页Missiles and Space Vehicles

摘　　要：针对大范围箔条阵列仿真过程中,存在计算量大,计算时间长等问题,提出利用远场叠加公式与多层快速多极子算法相结合的快速仿真分析方法,利用快速多极子法,完成小规模箔条阵列的精确建模和计算,并通过远场叠加法,快速得到大尺度箔条阵列的远场分布;分别构建坐标轴型箔条散射单元、米字型箔条散射单元,对比研究了不同结构的箔条散射特性;分析了远场叠加公式的计算精度,并基于远场叠加公式获得公里级箔条阵列的雷达散射特性。Aiming at the problems of large amount of calculation and long calculation time in the simulation process of the large scale chaff array,a combination of the far-field superposition formula and the Multilayer Fast Multipole Algorithm is proposed.The accurate modeling of small chaff array is completed by using method of MLFMA,and the far field distribution of large scale chaff array can be quickly obtained by using the far field superposition method.Coordinate-axis typed chaff scattering units and star-shaped chaff scattering units are constructed respectively,to study the scattering characteristics of different chaff.The calculation accuracy of the far-field superposition formula is analyzed,and the radar scattering characteristics of the kilometer chaff array are obtained.

关 键 词：箔条阵列 远场叠加公式 多层快速多极子算法 雷达散射特性 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程]