文中提出了一种基于子带自适应处理的宽带数字阵列雷达多主副瓣干扰抑制方法。首先,分析了子带内宽带干扰色散的残余问题,揭示了影响宽带干扰子带残余的关键因素;然后,提出基于子带分解的多波束联合抗干扰方法,并从子带滤波器的特性、子带内干扰色散残余、干扰对消、目标一维距离像、运算复杂度、硬件资源消耗等方面对子带处理的中频架构和基带架构进行了比较;最后,针对宽窄带、主副瓣组合干扰场景,通过计算机仿真分析了基于子带分解的多波束联合抗干扰方法的性能。

A multiple mainlobe and sidelobe jamming cancellation method based on subband adaptive processing for wideband digital array radar is proposed in this paper. Firstly, the jamming decorrelation effect of wideband interference dispersion in the subband is analyzed, and the key parameters affecting the jamming residue are given. Subsequently, a multi-beam joint jamming cancellation method based on subband decomposition is proposed, and the comparisons between intermediate frequency subband processing and baseband subband processing in terms of the characteristics of the subband filter, the residual interference dispersion in the subband, the interference cancellation, the onedimensional range profile, the computational complexity, and the hardware resource consumption are provided. Finally, the performance of the multi-beam joint jamming cancellation method based on subband decomposition is evaluated by computer simulation for broadband and narrowband, mainlobe and sidelobe combined jamming scenarios.

TN974