一种抗脉冲干扰的调零天线波束合成方法  

A Beamforming Method of Nulling Antenna for Impulse Interference Suppression

作　　者：曾浩[1] 方贝贝 吉利霞 赵云霄 董涛[2] ZENG Hao1, FANG Beibei1, JI Lixia1 ,ZHAO Yunxiao1, DONG Tao2(1. College of Communication Engineering, Chongqing University, Chongqing 400044, China; 2. State Key Laboratory- of Space-Ground Integrated hfformation Technology, Beijing Institute of Satellite hfformation Engineering, Beijing 100095, China)

机构地区：[1]重庆大学通信工程学院,重庆400044 [2]北京卫星信息工程研究所天地一体化信息技术国家重点实验室,北京100095

出　　处：《华南理工大学学报（自然科学版）》2018年第8期27-32,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61501069);中国空间技术研究院创新基金资助项目(CAST2016021);重庆大学中央高校基本科研业务费专项资金资助项目(2018CDGFTX0014)~~

摘　　要：在连续波干扰和脉冲干扰同时存在时,卫星导航接收机的调零天线如果采用经典最小均方误差(LMS)方法计算权矢量,则存在收敛速度慢、对脉冲干扰抑制能力有限的问题.为此,文中提出了一种抗脉冲干扰的调零天线波束合成方法.在对脉冲进行有效检测的基础上,针对脉冲存在和不存在两种情况下的不同信号特征,采用两路并行权值计算模式,最后根据脉冲信号的有无选择输出权值.理论分析和仿真结果表明,与经典LMS方法相比,文中提出的方法收敛速度更快,可以对脉冲干扰进行有效的抑制.When the continuous wave interference and impulse interference are present at the same time for the satellite navigation receiver, the nulling antenna will face the problem of low convergence speed and limited suppression perfomlance to impulse interference assuming the classical least mean square （LMS） method is taken to calculate the weight vector. A new strategy with two parallel calculations for weight vector is proposed according to the various signal characteristics on the condition that the impulse interference can be detected correctly. The new method chooses only one weight vector from the two results as the last output of the antenna according whether the impulse interference exits. The theoretic analysis and computer simulation illustrate that the proposed method can obtain a faster convergence speed and better suppression to the impulse interference compared with the classical LMS method.

关 键 词：调零天线 抗干扰 波束合成 收敛速度 

分 类 号：TN911[电子电信—通信与信息系统]