一种虚拟波束形成自适应加权空间平滑算法  

An Adaptive Weighted Spatial Smoothing Algorithm Utilizing Virtual Beamforming

作　　者：丁前军[1] 王永良[2] 张永顺[1] 陈辉[2] 

机构地区：[1]空军工程大学导弹学院,三原713800 [2]空军雷达学院雷达兵器运用工程全军重点实验室,武汉430010

出　　处：《电子与信息学报》2006年第12期2263-2268,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60272086);全国高等学校优秀青年教师教学科研奖励计划(TRAPOYT)资助课题

摘　　要：该文提出了一种用于自适应阵列的自适应加权空间平滑算法。通过构造虚拟自适应波束形成问题求取用于子阵协方差矩阵加权的加权向量,然后进行加权空间平滑自适应波束形成。理论分析与仿真结果表明,新算法能更有效地降低期望信号和干扰之间的相关性,使得用于空间平滑的子阵数减少,以降低阵列孔径损失。An adaptive weighted spatial smoothing algorithm is developed for adaptive arrays. By constructing a virtual issue of adaptive beamforming, the weight vector is obtained to weight the covariance matrixes of subarrays. Then, weighted spatial smoothing is processed and beamforming follows that. The theoretical analysis and simulation results show that the new algorithm can decorrelate the desired signal and the coherent interferences more efficiently, with the result that the number of sub-arrays needed decreases and the array aperture loss is reduced in spatial smoothing.

关 键 词：自适应波束形成 相干干扰 阵列信号处理 

分 类 号：TN911.7[电子电信—通信与信息系统]