弹载PD制导雷达主瓣杂波镜频干扰抑制方法  

The Study on Suppression Method of Main Lobe Mirror-frequency Interference for Missile-borne Pulse Doppler Radar

作　　者：崔忠正[1] 何松华[1] 张军[2] 

机构地区：[1]湖南大学计算机与通信学院,长沙410082 [2]国防科技大学ATR实验室,长沙410073

出　　处：《弹箭与制导学报》2011年第4期65-68,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：主瓣杂波镜频干扰抑制是脉冲多普勒雷达制导导弹低空下视攻击应用中需要解决的关键问题。通过对直接中频采样PD雷达镜频干扰的分析,文中提出了一种基于主瓣杂波速度估计与IQ通道相位差补偿的主瓣杂波镜频干扰抑制新方法。该方法运算开销小,在有效抑制主瓣杂波镜频分量的同时能够保留镜频处可能存在的目标信号分量。理论分析及仿真结果证实了方法的有效性。Mirror-frequency interference suppression of main-lobe clutter is a problem for PD（pulse Doppler）-radar guided missile with low-attitude down-attacking application.In this paper,a new method of main lobe mirror-frequency interference suppression was presented based on main-lobe clutter velocity estimation and compensation of phase error between IQ channels.Theoretical analysis and simulation result show that the method has advantages of low computation and effectively suppressing the mirror-frequency components of main-lobe clutter while preserving the target frequency components that may exist in mirror-frequency area.

关 键 词：脉冲多普勒雷达 镜频干扰 主瓣杂波 目标检测 空空导弹 下视攻击 

分 类 号：TN958.2[电子电信—信号与信息处理]