摘要
在自适应波束形成中,若干扰信号从主瓣进入,往往引起副瓣增高、主瓣变形且峰值偏移,波束性能明显恶化。针对平面阵,通过构造干扰阻塞矩阵,首先对主瓣内的干扰进行相消预处理,再进行自适应波束形成,最后进行权系数补偿,消除主波束偏移。仿真结果表明,该方法能有效消除主瓣干扰和解决波束畸变问题,提高自适应波束的性能。
The main lobe interference usually causes distortion and peak offset of main lobe and heightening of side-lobe level in adaptive beamforming.A interferential blocking matrix of uniform planar array is constructed for beamforming to cancel the main lobe interference,then weight compensatory algorithm cancel peak offset of main beam.The simulation verifies the effectiveness of the proposed method in avoiding the main beam distortion.
出处
《舰船电子工程》
2010年第11期85-87,91,共4页
Ship Electronic Engineering
关键词
自适应波束形成
平面阵
阻塞矩阵
干扰相消
adaptive beam forming
planar array
blocking matrix
interference cancellation
