频率响应软约束的宽带自适应波束形成  

Adaptive Broadband Beamforming with Frequency Response Soft Constraints

作　　者：陈明建[1] 罗景青[1] 阮怀林[1] 吴世龙[1] 

机构地区：[1]解放军电子工程学院,合肥230037

出　　处：《火力与指挥控制》2012年第12期83-86,共4页Fire Control & Command Control

摘　　要：针对常规线性约束最小方差(LCMV)波束形成中输出信干噪比(SINR)较低问题,提出了基于频率响应软约束的宽带自适应波束形成方法,该方法在LCMV波束器的约束条件基础上,增加对期望方向阵列频率响应软约束,可以得到近似无失真信号输出,同时增加波束抑制干扰噪声能力,提高输出SINR性能。仿真结果验证了该方法的有效性。A novel algorithm for adaptive broadband beamforming is presented in this paper to improve output Signal-to-Interference-plus-Noise Ratio（SINR） performance relative to the Linear Constraints Minimum Variance（LCMV） beamformer.The proposed beamformer designs the look-direction frequency response soft constraints to optimize the LCMV beamformer with the distortionless response constraint.This constraint could offer an approximately desired frequency response in the look-direction and improve interference and noise suppression performance of the optimized beamformer.Simulation results show the effectiveness of the proposed method

关 键 词：线性约束最小方差 宽带自适应波束形成 频率响应约束 输出信干噪比 

分 类 号：TN911.7[电子电信—通信与信息系统]