华中科技大学学报（自然科学版）2025，Vol.53Issue(3)：78-84,7.DOI:10.13245/j.hust.250380
基于SA-LFM波形的密集假目标干扰抑制算法
Dense false target jamming suppression algorithm based on SA-LFM waveform
摘要
Abstract
To counter the dense false targets formed by multi-component frequency-shifting jamming in the inter-pulse coherent and instantaneous forwarding scenarios,a dense false target jamming suppression algorithm based on inter-pulse slope agility linear frequency modulation(SA-LFM)waveform was proposed.Firstly,the inter-pulse SA-LFM waveform was transmitted by means of bandwidth agility to make the false targets move in the fast-time,so that the coherence of the interference was destroyed.Subsequently,the segmentation threshold was designed to binarize the echo pulse compression data according to the radar system performance index.Then,according to the distribution characteristics of the target and interference,the binarized data was added along the slow-time,and a suitable threshold was set to identify the target position and construct a time-domain filter.Finally,the echo pulse compression output was filtered in the time domain to eliminate the interference.Simulation results show that the proposed method can effectively suppress the dense false target jamming,and the critical value of the jamming-to-signal ratio for effective detection of the target after interference suppression is improved by 7 dB compared with the Otsu method.关键词
密集假目标干扰/移频干扰/干扰抑制/调频斜率捷变/二值化处理/时域滤波Key words
dense false target jamming/frequency-shifting jamming/interference suppression/frequency modulation slope agility/binarization processing/time-domain filtering分类
电子信息工程引用本文复制引用
王晓戈,张龙军,陈辉,李槟槟,徐创..基于SA-LFM波形的密集假目标干扰抑制算法[J].华中科技大学学报（自然科学版）,2025,53(3):78-84,7.基金项目
国家自然科学基金资助项目(62001510,62101593). （62001510,62101593）
