一种抗干扰入射角抖动的圆阵零陷加宽方法  

A null-broadening method for circular array against interference incident angle jitter

作　　者：李照照[1] 张磊[1] 马兰 LI Zhaozhao;ZHANG Lei;MALan(Xi’an Electronic Engineering Research Institute,Xi’an 710100,China)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《空天预警研究学报》2022年第4期272-274,280,共4页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

摘　　要：针对常规的自适应波束形成方法在遇到快速运动干扰时性能严重下降问题,利用干扰入射角服从均匀分布统计模型,通过对采样协方差矩阵进行角度扩展处理,提出一种基于均匀圆阵零陷展宽的自适应波束形成方法.仿真结果表明,与采样协方差矩阵求逆(SMI)方法相比,本文方法能够更有效地自适应地抑制干扰位置快速变化的运动干扰.Aiming at the problem that the performance of the conventional adaptive beamforming methods is seriously degraded when encountering fast moving interference,this paper proposes an adaptive beamforming method based on wide nulling of uniform circular array by using the interference incidence angle obeying the uniform distribution statistical model,and performing the angle extension of sample covariance matrix.The simulation results show that compared with the sample covariance matrix inverse(SMI)method,the proposed method can adaptively suppress the motion interference with the fast change of interference position more effectively.

关 键 词：自适应波束形成 零陷展宽 圆环阵列 角度扩展 均匀分布 

分 类 号：TN973.3[电子电信—信号与信息处理] TN957[电子电信—信息与通信工程]