基于硬件限幅器和LMS自适应算法的GPS接收机干扰抑制方法

doi:10.13229/j.cnki.jdxbgxb201603040

吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 941-946.doi: 10.13229/j.cnki.jdxbgxb201603040

基于硬件限幅器和LMS自适应算法的GPS接收机干扰抑制方法

李正训^{1, 2}, 孙晓颖¹, 曲良东¹, 刘妍妍¹, 允光石^{1, 2}

1.吉林大学通信工程学院,长春130022;
2.金策工业综合大学电子工程系,朝鲜平壤999093

收稿日期:2015-03-05 出版日期:2016-06-20 发布日期:2016-06-20
通讯作者: 孙晓颖(1969-),男,教授,博士生导师.研究方向:信号参量估计.E-mail:sunxy@jlu.edu.cn
作者简介:李正训(1975),男,副教授,硕士.研究方向:移动通信网络分析和设计.E-mail:rijh1010@163.com
基金资助:
国家自然科学基金项目(61171137).

Interference suppression method of GPS receiver based on combination of hard-limiter and LMS adaptive algorithm

RI Jong-hun^{1, 2}, SUN Xiao-ying¹, QU Liang-dong¹, LIU Yan-yan¹, YUN Kwang-soek^{1, 2}

1.College of Communication Engineering,Jilin University, Changchun 130022,China;
2.College of Electromagnetic Engineering, Kimchaek University of Technology, Pyongyang 999093, D.P.R.Korea

Received:2015-03-05 Online:2016-06-20 Published:2016-06-20

摘要/Abstract

摘要： 根据硬件限幅器抑制小信号的特性得到干扰信号,将硬件限幅器输出信号作为自适应算法的参考信号,再利用LMS的自适应特性消除GPS接收机输入信号中的时变强干扰信号,最终抑制干扰获得有效信号。仿真结果表明该方法对未知源的强干扰信号具有较好的抑制性能,当信干比在-25~-35 dB时干扰抑制能力可改善30 dB以上。

关键词: 通信技术, GPS接收机, 干扰抑制, 硬件限幅器, 最小均方算法

Abstract: Based on the small signal suppression performance of hard-limiter, the interference signal is obtained. The reference signal of adaptive algorithm is formed using output signals of the hard-limiter; then based on the adaptive performance of Least Mean Square (LMS), the strong time-varying interference of GPS receiver input signal is cancelled. Finally, the interference signal is suppressed and the effective signal is obtained. Simulation results show that the proposed algorithm has good suppression performance for unknown strong interference signal and improve interference suppression capability by more than 30 dB when Signal to Interference Ratio (SIR) is in the range from -25 dB to -35 dB.

Key words: communication technology, GPS receiver, interference suppression, hard-limiter, least mean square(LMS) algorithm

中图分类号:

TN929.5

李正训, 孙晓颖, 曲良东, 刘妍妍, 允光石. 基于硬件限幅器和LMS自适应算法的GPS接收机干扰抑制方法[J]. 吉林大学学报(工学版), 2016, 46(3): 941-946.

RI Jong-hun, SUN Xiao-ying, QU Liang-dong, LIU Yan-yan, YUN Kwang-soek. Interference suppression method of GPS receiver based on combination of hard-limiter and LMS adaptive algorithm[J]. 吉林大学学报(工学版), 2016, 46(3): 941-946.

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基于硬件限幅器和LMS自适应算法的GPS接收机干扰抑制方法

Interference suppression method of GPS receiver based on combination of hard-limiter and LMS adaptive algorithm

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