双站散射模式响应的分析与应用  

Bistatic model scattering response analysis and its application

作　　者：李志平[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《电波科学学报》2011年第2期222-226,411,共6页Chinese Journal of Radio Science

摘　　要：基于电磁散射积分方程求解的矩量法,将入射和散射的平面波分解成含有Bessel函数的模式叠加,提出了目标双站散射模式响应的概念,得到目标远场双站雷达散射截面(RCS)与模散射响应之间成傅立叶变换的关系。根据基函数的性质阐明了模散射响应矩阵具有带限低通特性、互易对称性和近似成对角分布稀疏特性。模式散射响应是与外在观测角无关的目标内秉属性,对目标识别有着重要意义。利用稀疏特性等性质和快速傅里叶变换,可高效快速地计算目标双站RCS。Model scattering response （MSR） matrix is presented to describe bistatic radar cross seetion（RCS） based on the moment of method. Fourier transform relationship between the two can be obtained by incident and scattering plane wave expanded as Bessel series summation. MSR matrix is low-pass band-limited, recip- rocal symmetry and diagonal sparse approximately because of base function characteristic. MSR matrix is independent with the observation angle to the radar target, which is of great importance to target recognition. Fast algorithm of bistatic RCS can be implemented by the characteristic and fast Fourier transform.

关 键 词：双站模式散射响应 双站雷达散射截面 快速傅立叶变换 

分 类 号：TN911[电子电信—通信与信息系统]