子阵级平面相控阵ADBF的旁瓣抑制方法  

Sidelobe suppression method for ADBF at subarray level with planar phased array

作　　者：胡航[1] 邓新红[1] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,黑龙江哈尔滨150001

出　　处：《电波科学学报》2008年第1期201-205,共5页Chinese Journal of Radio Science

基　　金：航天支撑基金(No.2003-HG18)

摘　　要：研究子阵级平面相控阵ADBF自适应方向图的旁瓣抑制方法。给出了二维子阵级ADBF的信号模型,适用于任意的平面相控阵。分析了常规的二维子阵级ADBF方法,引入了基于子空间投影的二维子阵级ADBF。研究了常规方法和基于子空间投影方法的结合方法,提高了对自适应方向图进行旁瓣抑制的灵活性,有效地降低了输出SINR损失;可在较好地进行旁瓣抑制的同时,得到与最优波束形成器非常接近的输出SINR。仿真结果证明了所提出方法的有效性。Sidelobe suppression method of adaptive patterns of ADBF at subarray level with planar phased array is studied. The signal model of two-dimensional ADBF at subarray level is constructed suitable for any planar phased array. The conventional two-dimensional ADBF at subarray level is analyzed and the two-dimen- sional ADBF at subarray level based on subspace projection is introduced. A combined method of conventional method and subspace projection method is presented for improving the flexibility of suppression on sidelobe and reducing output SINR loss. Simulation results indicate that the combined method can suppress sidelobe markedly and obtain output SINR very approximate to that of optimum beamformer simultaneously.

关 键 词：子阵级相控阵 二维ADBF 子空间投影 旁瓣抑制 输出SINR 

分 类 号：TN957.51[电子电信—信号与信息处理] TN911.7[电子电信—信息与通信工程]