基于空时自适应处理的多波束抗干扰改进算法  

Improved multi-beam anti-jam algorithm based on space-time adaptive processing

作　　者：王艺[1] 段哲民[1] Zain-ul-Abideen 杨阳[1] 

机构地区：[1]西北工业大学电子信息学院,西安710072

出　　处：《计算机工程与应用》2013年第17期221-225,249,共6页Computer Engineering and Applications

摘　　要：传统的多波束算法无法处理与导航信号来自同一方向的窄带干扰。针对该问题,提出了一种改进的多波束抗干扰算法,级联时频域结合的IIR格型陷波器于多波束抗干扰算法中,通过IIR格型陷波器预测并抑制窄带干扰,通过多波束形成抑制宽带干扰。这种新的算法能有效地抑制窄带和宽带干扰,提升GPS抗干扰接收机的性能。Traditional multi-beam algorithm cannot suppress narrowband jammer which comes from the same direction with the useful signal. To deal with those problems, an improved multi-beam anti-jam method which adds multistage IIR lattice notch fil-ter is proposed. The narrowband jammer can be forecast and suppressed by using IIR lattice notch filter. The broadband jammer can be suppressed by multi-beam algorithm. The new method which can suppress both narrowband and broadband jammer effec-tively, improves the performance of the anti-jam receiver.

关 键 词：多波束抗干扰 空时自适应处理 IIR格型陷波滤波器 

分 类 号：TN911[电子电信—通信与信息系统]