强杂波背景下FMCW雷达低小慢目标探测研究  

Research on Low Small Slow Target Detection by FMCW Radar in Strong Clutter Background

作　　者：薛卫东[1] 王文军[1] 秦征 彭炳江 李百社 秦光明[1] XUE Weidong;WANG Wenjun;QIN Zheng;PENG Bingjiang;LI Baishe;QIN Guangming(Shaanxi Changling Electronic Technology Co.,Ltd.,Baoji 721006,China)

机构地区：[1]陕西长岭电子科技有限责任公司,陕西宝鸡721006

出　　处：《无线电工程》2023年第12期2872-2877,共6页Radio Engineering

基　　金：陕西省重点研发计划项目(2020ZDLGY02-07,2023-YBGY-044)。

摘　　要：强杂波背景下的雷达回波处理一直是雷达信号处理的难点和重要工作。对调频连续波雷达信号处理进行了详细分析,完成了中频采样、数字下变频、FFT处理、MTI/AMTI处理、反异步处理、CFAR和杂波图处理原理框图设计。通过对强杂波背景下FMCW雷达低小慢目标的探测能力分析,提升了强杂波背景下对近距离小木船及海面漂浮的浮筒等低小慢目标的探测能力。为复杂海洋环境下FMCW雷达低小慢目标探测提供了一种新方法。Radar echo processing in strong clutter background has always been a difficult and important work of radar signal processing.Firstly,the signal processing of FMCW radar is analyzed in detail.Then the principle block diagram design of IF sampling,digital down conversion,FFT processing,MTI/AMTI processing,anti-asynchronous processing,CFAR and clutter map processing is completed.Finally,the detection of low small slow targets by FMCW radar could improve the detection ability of low small slow targets such as short range small wooden ships and floating buoys on the sea under strong clutter background.Thus,a new method is provided for FMCW radar to detect low small slow targets in complex marine environment.

关 键 词：强杂波 线性调频 高速AD采样 FFT处理 信号处理算法 低小慢目标探测 

分 类 号：TN958.3[电子电信—信号与信息处理]