基于频控阵波束锐化的主瓣干扰抑制技术  

The Main Lobe Interference Suppression Technique Based on Beam Sharpening of Frequency Diverse Array

作　　者：胡瑞贤[1] 贾秀权[1] 曹晨[1] HU Rui-xian;JIA Xiu-quan;CAO Chen(China Academy of Electronics and Information Technology,Beijing 100041,China)

机构地区：[1]中国电子科学研究院,北京100041

出　　处：《中国电子科学研究院学报》2023年第8期770-778,共9页Journal of China Academy of Electronics and Information Technology

摘　　要：文中研究基于频控阵波束锐化的主瓣干扰的抑制问题,在非均匀对数偏频的基础上,利用频控阵列阵因子的空时耦合和变化、距离依赖的特性自适应的进行发射波束形成,在角度域-距离域上实现主波束锐化和精准指向,极大地抑制距离依赖和角度依赖的干扰。由于只在目标点处才会出现最大的波束能量聚焦,在接收端利用线性约束最小方差(LCMV)准则,空域上和期望信号完全对准主瓣干扰,利用距离依赖的差异也可以实现有效的抑制。仿真实验验证了方法的有效性。This article discusses the mainlobe interference suppression problem which is based on beam sharpening technique of frequency diverse array(FDA).On the basis of non-uniform logarithmic frequency offset,the space-time coupling and variation of the frequency-controlled array factor,are used to and the distance-dependent characteristics of adaptive transmission beamforming,are used to realize the beam sharpening and precise main beam pointing in the angle-distance domain,greatly suppressing distance-dependent and angle-dependent interference.Since the maximum beam energy focusing occurs only at the target point,using the linear constrained minimum variance(LCMV)criterion at the receiving end,for the mainlobe interference that is completely aligned with the desired signal in the spatial domain,the distance-dependent difference can also be used to achieve effective suppression.Simulation experiments verify the superiority of this method.

关 键 词：主瓣干扰抑制 频控阵 波束锐化 非均匀对数偏频 

分 类 号：TN958[电子电信—信号与信息处理]