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.
作者
刘鑫
王雪松
孟刚
刘佳琪
李猛猛
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)
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
chaff array
far-field superposition formulation
multi-layer fast multipole algorithm
radar scattering characteristics
