雷达科学与技术2025，Vol.23Issue(2)：125-135,11.DOI:10.3969/j.issn.1672-2337.2025.02.002
基于时频重叠度的脉内捷变波形设计与干扰对抗算法
Design of Intra-Pulse Frequency Agile Waveform and Interference Counter-measures Based on Time-Frequency Overlap Degree
摘要
Abstract
Interrupted sampling repeater jamming,with its advantage of rapid intra-pulse sampling and forwarding,forms jamming signals that are strongly correlated with the target.Consequently,it can obtain pulse compression pro-cessing gain and form false target groups,posing a severe test to radar target detection.Aiming to improve the active countermeasure capability of radar,an intra-pulse frequency agile waveform design and jamming countermeasure algo-rithm based on minimizing the time-frequency overlap area is proposed.Firstly,the objective function regarding the time-frequency overlap area between the jamming and the target is constructed.By optimizing the number of sub-pulses and the intra-pulse coding sequence,the time-frequency orthogonality between the jamming and the target is increased.Based on the optimized intra-pulse frequency agile waveform,the interference area is identified by an edge detection al-gorithm and a time-frequency filter is constructed to realize interference identification and suppression in the time-fre-quency domain.Experimental results show that the proposed algorithm exhibits good jamming countermeasure perfor-mance in single and multiple intermittent sampling repeater jamming scenarios,effectively improving the jamming coun-termeasure capability of radar.关键词
间歇采样转发干扰/脉内捷变波形/时频重叠/干扰抑制Key words
interrupted sampling repeater jamming(ISRJ)/intra-pulse frequency agile waveform/time-frequen-cy overlap/interference suppression分类
电子信息工程引用本文复制引用
段丽宁,吴耀君,彭本旺,王国政,邓明龙,全英汇..基于时频重叠度的脉内捷变波形设计与干扰对抗算法[J].雷达科学与技术,2025,23(2):125-135,11.基金项目
国家自然科学基金(No.62331019) （No.62331019）
