频域零相移多凹口极化滤波器  

Frequency Domain Null Phase-Shift Multinotch Polarization Filter

作　　者：毛兴鹏[1] 刘永坦[2] 邓维波[2] 

机构地区：[1]哈尔滨工业大学威海,山东威海264209 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《电子学报》2008年第3期537-542,共6页Acta Electronica Sinica

基　　金：哈尔滨工业大学(威海)研究基金(No．HIT(WH)B200608)

摘　　要：电台干扰是高频雷达面临的主要干扰,极化信号处理在近年来发展为抑制电台干扰的有效手段.在研究极化状态的时频不变性和极化滤波的时频不变性的基础上,本文结合高频雷达零中频信号的特点提出了频域估计多干扰极化状态的方法,并设计出频域零相移多凹口极化滤波器.通过频域极化滤波、幅相补偿和多凹口技术的结合解决了相参系统中多干扰的抑制问题.理论和仿真实验证明了算法的有效性.Radio interference is a main interference for HF radar, and the polarization signal processing has been developed as an effective method to suppressing it. Based on the research of the inflexibility in the temporal domain and the frequency domain of polarized state and polarization filtering, a new method of estimating the polarization state of multi-interference in frequency domain is discussed, and a frequency domain null phase-shift multinotch polarization filter is proposed, By means of the polarization filtering in frequency domain, the amplitude ＆ phase compensation and the multi-notches technology, multi-interference can be deeply suppressed in a phase-correlated system, Effectiveness of the algorithm has been proved by theoretical analysis and simulation experiment.

关 键 词：极化滤波 信号处理 抗干扰 高频雷达 

分 类 号：TN957.52[电子电信—信号与信息处理]