【摘要】 针对雷达在实际对抗条件下可能受到来自多个方向的有源干扰问题,设计了一种带有辅助通道的双极化阵列天线构型,并基于正交子空间思想提出了一种新的极化阵列雷达滤波算法,该算法能够在单个重复周期内完成对干扰样本矢量的准确估计和快速滤波处理。仿真实验构建了雷达面临主副瓣同时多点源干扰的场景,滤波处理结果验证了所提算法在对抗此类干扰时的有效性。与传统干扰抑制算法的对比进一步说明了所提方法在干扰估计方面效率更高,且用于构建子空间的矩阵维度更小。更多还原

【Abstract】 In practical counterwork situation,radar may be interfered by active jamming from multiple directions.A dual-polarized array antenna configuration with auxiliary channels is designed in this paper.Based on the idea of orthogonal subspace,a novel polarimetric array filtering algorithm is proposed,which can estimate and filter the interferences vector accurately in a single pulse repetition time(PRT).The simulation experiment establishes the scene that radar faces mainlobe and sidelobe interferences and multipoint-source interferences at the same time.These interferences can be effectively suppressed by using the novel filtering algorithm,which is proved by the filtering result.Compared with the traditional interference suppression algorithms,the proposed algorithm can provide higher estimation efficiency and smaller matrix dimension used to construct the subspace.更多还原