斜投影极化滤波器  

An Oblique Projecting Polarization Filter

作　　者：毛兴鹏[1] 刘爱军[1] 邓维波[2] 曹斌[3] 张钦宇[3] 

机构地区：[1]哈尔滨工业大学(威海)通信工程系,山东威海264209 [2]哈尔滨工业大学电子工程研究所,黑龙江哈尔滨150001 [3]哈尔滨工业大学深圳研究生院,广东深圳518100

出　　处：《电子学报》2010年第9期2003-2008,共6页Acta Electronica Sinica

基　　金：国家973重点基金研究发展计划项目(No.2007CB310606)

摘　　要：极化滤波是高频雷达等系统抗干扰的主要手段.在斜投影技术基础上,本文通过分别建立目标信号和干扰的极化子空间,提出一种斜投影极化滤波器.该滤波器在抑制干扰的同时不会对目标信号产生影响,是传统极化滤波器的推广和完善.文中给出了斜投影极化滤波算子的构造方法,分析了极化参数估计偏差对滤波器性能的影响,并对其抗干扰效果进行了仿真.仿真结果表明斜投影极化滤波器是一种有效的极化滤波技术.Polarization filtering is a main method to suppress the interference in high frequency（HF） radar and other systems.Based on the oblique projection technique,an oblique projecting polarization filter（OPPF） is proposed by constructing the polarization subspaces of the target signal and interference,respectively.The proposed OPPF,which is also viewed as an extension of a conventional polarized filter,can suppress the interference effectively while any influence on target signal will be not introduced.A generalized construction method of OPPF operator is provided,the impact on the performance of the estimation errors are discussed,and simulation results of the interference suppressing are illustrated.It is indicated that the proposed filter is a valid filtering technique for interference canceling.

关 键 词：斜投影算子 极化滤波 抗干扰 高频雷达 

分 类 号：TN911.7[电子电信—通信与信息系统]