一种在主瓣干扰条件下稳健的自适应波束形成方法

在自适应波束形成技术抑制干扰问题中 ,当存在主瓣干扰时 ,便暴露出两个缺陷 :一是副瓣电平增高 ;二是主波束变形且峰值偏移。提出了一种先在数据域实施干扰相消预处理 ,再进行自适应波束形成的解决方法 ,该方法在抑制主瓣干扰的同时 ,有效地解决了副瓣电平增高、主波束变形及偏移的难题。仿真结果证明了该方法的有效性。

Robust Adaptive Beam Forming Under Main Lobe Interference Conditions

There are two disadvantages in adaptive beam forming in the presence of main lobe interference, one is heightening of side-lobe level, the other is distortion and peak offset of main beam. A robust method is proposed in this paper. First, preprocessing in data domain is adopted for interference cancellation, then adaptive beam forming is performed. This method can not only suppress the main lobe interference, but also solve the problem about heightening of side-lobe level, distortion and peak offset of main beam. Computer simulation results demonstrate the effectiveness of the proposed method.