一种基于双差波束的主瓣抗干扰算法研究  

Research into A Main-lobe Anti-jamming Algorithm Based on Double Difference Beam

作　　者：李向阳[1] 郭晓乐 孙晓舟[1] LI Xiang-yang;GUO Xiao-le;SUN Xiao-zhou(The 38th Research Institute of CETC,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所

出　　处：《舰船电子对抗》2019年第3期63-67,共5页Shipboard Electronic Countermeasure

摘　　要：分析和研究了雷达接收到的和差波束,提出了一种利用和波束、方位差波束、俯仰差波束、双差波束以及辅助波束的自适应抗干扰方法。该方法的关键是利用高增益的差波束对消主瓣干扰的同时,构造出指向旁瓣的辅助波束用来对消旁瓣干扰,所以能够实现主瓣干扰与旁瓣干扰的同时消除。仿真结果表明,主瓣干扰和目标信号在方位上或者俯仰上存在差异,本方法就可以很好地对消掉主瓣干扰,并且主瓣干噪比越低,对消效果越明显。This paper analyzes and studies the sum and difference beams received by the radar,puts forward an adaptive anti-jamming method by using the sum beam,azimuth difference beam,pitch difference beam,double difference beam and auxiliary beam.The key of this method is to use the difference beam with high gain to cancel the main lobe jamming,and at the same time construct the auxiliary beams pointing to the side lobes to eliminate the side lobe jamming,therefore the main-lobe jamming and side lobe jamming can be simultaneously eliminated.The simulation results show that this method can effectively cancel the main-lobe jamming as long as there is difference between the main-lobe jamming and target signal in the azimuth or pitch,and the lower the main lobe jamming noise ratio is,the better the cancellation effect is.

关 键 词：主瓣干扰 双差波束 干扰对消 

分 类 号：TN973.31[电子电信—信号与信息处理]