强干扰下的波束形成  

Beamforming in Strong Jamming

作　　者：刘志强[1] 李钊 马红光[1] 杨利锋[3] 裴志华[4] 

机构地区：[1]第二炮兵工程学院 [2]驻石家庄地区军事代表室 [3]中国电子科技集团公司第29研究所 [4]中国人民解放军96173部队

出　　处：《无线电工程》2007年第7期61-64,共4页Radio Engineering

摘　　要：提出强干扰条件下等距线阵的波束形成方法。该方法将空间角度映射到数字频率,对阵列方向图的设计就等效于对FIR滤波器的零点设计。在强干扰方向形成零陷可采用零点修改法与零点增加法2种设计方法,由于该2种方法均会使波束主瓣方向略有改变,且对旁瓣的抑制能力有所下降,所以要设计方向图指向正确且对旁瓣电平有要求的方向图时需要进行迭代设计。仿真结果表明,该2种设计方法适用于强干扰条件下弱信号的接收。Beamforming in strong jamming based on isometric line array is proposed. This method maps spatial angle into digital frequency, so designing array＇s directional diagram is equal to designing FIR filter＇s zeros. There are two ways, modifying and adding zero, to set nulls on strong jamming directions. The two ways will change the main lobe of directional diagram a little, and will weaken rejection ability of main lobe to side lobes,in order to design a directional diagram which beam direction is unbiased and side lobes is lower than a prescribed value, so iterative design is necessary. Simulation result shows the two design methods are suitable to receiving week signal in strong jamming.

关 键 词：强干扰 等距线阵 滤波器 波束形成 

分 类 号：TN821[电子电信—信息与通信工程]