一种平顶方向图宽带时域波束形成器设计方法  

A Design Method for Flat Top Pattern Broadband Time Domain Beamformer

作　　者：王琦 张伟[1] 王建 王正浩[1] 陈昳霏 WANG Qi;ZHANG Wei;WANG Jian;WANG Zhenghao;CHEN Yifei(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,成都610036

出　　处：《电子信息对抗技术》2025年第2期80-84,共5页Electronic Information Warfare Technology

摘　　要：针对平顶方向图宽带时域波束形成器的设计问题,将设计过程分解为频域平顶波束设计和时域波束有限冲激响应(Finite Impulse Response,FIR)滤波器计算两部分。构造加权向量和频域平顶波束方向图的变换关系,通过自适应调整旁瓣约束区域,快速迭代优化加权向量。结合调向加权向量和群延时构造通道期望频率响应,求解最小均方误差准则下通道FIR滤波器系数,二者组合实现平顶方向图宽带时域波束形成器。该方法无需借助凸优化工具,仿真验证了设计方法的有效性。Regarding the design issue of broadband time-domain beamformer with flat top pattern,the design process of a broadband time-domain beamformer with a flat top pattern is decomposed into two parts:frequency-domain flat top beam design and time-domain beam finite impulse response(FIR)filter calculation.The transformation relationship between weighted vectors and frequency domain flat top beam patterns is constructed.The weighted vector is quickly iteratively optimized by adaptively adjusting the sidelobe constraint region.Combining the directional weighted vector and group delay,the expected frequency response of the channel are constructed,and the channel FIR filter coefficients are solved under the minimum mean square error criterion.Combining the two methods,a flat top pattern broadband time-domain beamformer is achieved.This method does not require the use of convex optimization tools,and the effectiveness of the design method is verified through simulation.

关 键 词：平顶方向图 时域波束形成 FIR滤波器 宽带波束形成 

分 类 号：TN971[电子电信—信号与信息处理]