现代雷达2025，Vol.47Issue(2)：31-36,6.DOI:10.16592/j.cnki.1004-7859.20230504001
一种基于双数字信道化储频的SAR干扰方法
A Method of SAR Jamming Based on Dual-digital Channelized Frequency Storage
摘要
Abstract
To improve the probability of target interception,the operating bandwidth of radar jammers is usually widen by adding re-ceiving channels to reduce frequency scanning time as well as achieving quickly searching for targets.However,this also brings the problem of incomplete detection information of target due to the presence of captured targets crossing multiple channels,which af-fects the effectiveness of jamming.A dual-digital channelized frequency storage structure with cross channel processing is proposed in this paper to achieve cross channel channelized receiving and transmission.Firstly,for the synthetic aperture radar(SAR)re-connaissance,time-frequency analysis is used to estimate the intra pulse parameters of SAR,and the SAR data fusion and recogni-tion are completed by combining the pulse description words within and between channels.Then,for the SAR jamming,the'pulse group step frequency shift and multi-tap'method of joint modulation between the range and azimuth directions is used to generate complex jamming pulse signals.Finally,simulation results show that the proposed method forms an effective area of jamming for SAR under different bandwidth ratios of targets and corresponding jamming modulation conditions.关键词
合成孔径雷达/数字射频存储器/信道化/数据融合/干扰调制Key words
synthetic aperture radar(SAR)/digital radio frequency memory(DRFM)/channelization/data fusion/jamming modulation分类
电子信息工程引用本文复制引用
兰初军,宋志勇,刘宇..一种基于双数字信道化储频的SAR干扰方法[J].现代雷达,2025,47(2):31-36,6.基金项目
国家创新研究群体科学基金资助项目(61921001) （61921001）
