太赫兹科学与电子信息学报, 2018, 16 (6): 1054, 网络出版: 2019-06-10
一种改进的机载雷达抗副瓣干扰方法
An improved suppressing sidelobe jamming method of airborne radar
和差波束空时自适应处理 副瓣干扰 改善因子 Space-Time Adaptive Processing with sum and differ side lobe jamming improvement factor
摘要
某机载雷达采用和差波束空时自适应处理(ΣΔ-STAP)方法能较好地对抗一个主瓣干扰和ΔA波束非零点副瓣干扰,但当干扰从ΔA波束副瓣零点方向进入时,主瓣分裂,对抗效果差。结合雷达实际特点,提出一种改进的ΣΔ-STAP方法,利用和、差和保护3个通道进行二维自适应处理。仿真结果表明,该方法能够很好对抗副瓣零点干扰,性能较以前ΣΔ-STAP方法有10 dB的改善,并且受幅相误差的影响变弱。
Abstract
Space-Time Adaptive Processing with sum and difference beams(ΣΔ-STAP) is utilized in airborne radar. It can suppress one jamming from common side lobe direction and main lobe direction well. But the effect in suppressing jamming from the beam’s zero side lobe direction is not very good and the main lobe will be separated. According to the characteristics of airborne radar, an improved ΣΔ-STAP method based on Σ, ΔA and guard channels is proposed. Simulation results present that the improved method can suppress jamming from the beam’s zero side, and the improvement factor is enhanced by 10 dB. The influence on the performance by error becomes weaker.
李文君, 杨海龙, 孟军. 一种改进的机载雷达抗副瓣干扰方法[J]. 太赫兹科学与电子信息学报, 2018, 16(6): 1054. LI Wenjun, YANG Hailong, MENG Jun. An improved suppressing sidelobe jamming method of airborne radar[J]. Journal of terahertz science and electronic information technology, 2018, 16(6): 1054.