现代防御技术 ›› 2022, Vol. 50 ›› Issue (1): 33-40.doi: 10.3969/j.issn.1009-086x.2022.01.005

• 导航、制导与控制 • 上一篇    下一篇

高动态GPS抗干扰算法仿真研究

陈嘉鑫, 黎柏春   

  1. 中国民航大学 航空工程学院,天津 300300
  • 收稿日期:2021-07-14 修回日期:2021-10-09 出版日期:2022-02-28 发布日期:2022-02-23
  • 作者简介:陈嘉鑫(1992-),男,天津人。助理实验师,硕士,研究方向为航空工程。
  • 基金资助:
    中央高校基金(2000560433)

Simulation of High Dynamic GPS Anti⁃Jamming Algorithm

Jia-xin CHEN, Bai-chun LI   

  1. CAUC,College of Aeronautical Engineering,Tianjin 300300,China
  • Received:2021-07-14 Revised:2021-10-09 Online:2022-02-28 Published:2022-02-23

摘要:

对于高动态条件下GPS(global positioning system)接收机的抗干扰问题,研究等距线阵接收信号模型和基于协方差矩阵扩张的基本原理,并仿真分析了2种基于协方差矩阵扩张的经典抗干扰算法:Mailloux算法和Zatman算法在高动态环境下的作用效果。经过Matlab仿真,结果表明,相比与常规方法,Mailloux方法和Zatman方法在阵元是等距线阵时,都能有效地加宽从干扰方向上形成的零陷,能够提高在高动态环境下的抗干扰效果,使接收机能够捕获卫星信号。

关键词: 全球定位系统, 高动态, 等距线阵, 协方差矩阵扩张, 抗干扰算法

Abstract:

For the anti-jamming problem of global positioning system(GPS) receiver in high dynamic environment, We studies the received signal model of equidistant linear array and the basic principle based on covariance matrix expansion, and simulates and analyzes the effect of two classical anti-jamming algorithms based on covariance matrix expansion: Mailloux algorithm and Zatman algorithm in high dynamic environment. Through Matlab simulation, the results show that compared with the conventional method, Mailloux method and Zatman method can effectively widen the null formed from the interference direction when the array element is an equidistant linear array, which can improve the anti-jamming effect in high dynamic environment and enable the receiver to capture satellite signal.

Key words: global positioning system(GPS), high dynamic, equidistant linear array, covariance matrix taper, anti-jamming algorithm

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