一种基于IIR滤波器的地杂波抑制技术  

A Design of Ground Clutter Suppression Technology Based on IIR Filter

作　　者：孟辰[1] 马斌[1] Meng Chen;Ma Bin(No.39 Research Institute of CETC,Xi'an 710065 China)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2021年第2期38-46,共9页

摘　　要：低小慢监测雷达在目标的探测中会收到目标环境中地物的杂波,杂波会影响目标检测的概率。选择合适的杂波滤波器成为对地杂波抑制的关键问题。对于传统的基于FIR滤波器的杂波滤波器存在杂波抑制低,低速目标难以检测的问题。为了解决FIR滤波器所存在的问题,本文结合雷达原理样机,设计1种基于IIR滤波器的杂波滤波器,通过理论仿真与实测,与FIR滤波器相比,幅频响应曲线能够在零频附近产生更深更窄的凹口,保证杂波有效抑制同时,提升雷达对于低速目标的检测能力。Low-altitude surveillance radar will receive clutters from objects in the target environment in the detection of targets,which will affect the probability of target detection.The selection of suitable clutter filters has become a key problem in ground clutter suppression.For traditional clutter filters based on FIR filters,there is a problem which clutter suppression of low-speed and low-speed target signals are difficult to detect.In order to solve the problems existing in the FIR filters,this paper combined with the radar principle prototype,designs a clutter filters based on the IIR filters.Through theoretical simulation and measurement,its amplitude-frequency response curve can produce deeper and narrow concaves near zero frequency to ensure the effective suppression of clutter.At the same time,improve the detection ability of radar for low-speed targets.

关 键 词：杂波抑制 低小慢监测雷达 IIR滤波器 

分 类 号：TN9[电子电信—信息与通信工程]