摘要
主瓣干扰与真实目标信号在同一个波束范围内,特别是自卫式主瓣干扰,严重影响了雷达的性能,因此,抑制主瓣干扰是目前雷达领域研究的热点也是难点之一。针对该问题,提出了一种基于信号重构的雷达主瓣干扰抑制方法。该方法首先将受主瓣干扰的脉冲剔除,然后基于修改的迭代自适应门限算法沿慢时间维对受干扰的脉冲进行重构。仿真结果表明:所提的方法可以有效抑制主瓣间断干扰,而且对受干扰脉冲的数量和周期具有较高的鲁棒性,具有较好的工程应用前景。
The mainlobe interference,especially the self-defense mainlobe interference,seriously affects the radar performance since the signals of the mainlobe and the radar echo generated by a real target are within the same beamwidth.Therefore,suppressing mainlobe interference is one of the hot spots and difficulties in the current radar field.To address this issue,a radar mainlobe interference suppression approach based on signal reconstruction is proposed.Firstly,the pulse signals of mainlobe interference are eliminated.Then,based on the modified iterative method with adaptive thresholding(MIMAT),the interfered pulse signals are reconstructed along the slow time dimension.The simulation results indicate that the proposed approach not only could effectively suppress the mainlobe intermittent interference,but also has high robustness to the amount and period of the interference pulses,which has a promising engineering application prospect.
作者
徐磊磊
潘俊
周宇泰
尹聚祺
郑晟
魏玉龙
宋波涛
孙全
XU Leilei;PAN Jun;ZHOU Yutai;YIN Juqi;ZHENG Shen;WEI Yulong;SONG Botao;SUN Quan(Shanghai Electromechanical Engineering Institute,Shanghai 201109,China;National Key Laboratory of Automatic Target Recognition(ATR),Shanghai 201109,China;Shanghai Academy of Spaceflight Technology,Shanghai 201109,China)
出处
《上海航天(中英文)》
2025年第3期166-174,共9页
Aerospace Shanghai(Chinese&English)
基金
国家自然科学基金资助项目(62201408)。
关键词
主瓣干扰抑制
间断干扰
脉冲剔除
信号重构
mainlobe interference suppression
intermittent interference
pulse elimination
signal reconstruction
