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利用信号重构的全球导航卫星系统欺骗干扰抑制方法

卢丹 白天霖

卢丹, 白天霖. 利用信号重构的全球导航卫星系统欺骗干扰抑制方法[J]. 电子与信息学报, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
引用本文: 卢丹, 白天霖. 利用信号重构的全球导航卫星系统欺骗干扰抑制方法[J]. 电子与信息学报, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
Dan LU, Tianlin BAI. Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction[J]. Journal of Electronics & Information Technology, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
Citation: Dan LU, Tianlin BAI. Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction[J]. Journal of Electronics & Information Technology, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321

利用信号重构的全球导航卫星系统欺骗干扰抑制方法

doi: 10.11999/JEIT190321
详细信息
    作者简介:

    卢丹:女,1978年生,副教授,主要研究方向为卫星导航抗干扰、阵列信号处理

    白天霖:男,1993年生,硕士生,研究方向为卫星导航抗干扰

    通讯作者:

    卢丹 dlu@cauc.edu.cn

  • 中图分类号: TN967.1

Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction

  • 摘要:

    欺骗式干扰通过发射与真实卫星信号相似的信号误导接收机产生错误的定位结果,具有极大的危害。该文针对转发式欺骗干扰,提出一种基于信号重构的单天线欺骗干扰抑制方法。该方法首先通过参数估计方法估计出欺骗信号载波频率和码相位,然后构建欺骗信号子空间正交投影矩阵以抑制干扰。仿真实验结果表明该方法对欺骗干扰具有良好的抑制效果,能够保障接收机在干扰环境中实现有效定位,并具有较低的运算复杂度。

  • 图  1  欺骗干扰抑制算法流程图

    图  2  $\mu ,\Delta f$以及度$L$的关系曲线图

    图  3  PRN1的捕获结果

    图  4  真实卫星信号定位结果

    图  5  欺骗干扰抑制前后定位结果

    表  1  仿真参数

    星号中频(MHz)采样率(MHz)信噪比(dB)干噪比
    1 2 3 6 14 20 22 251.4055.714–20–15
    下载: 导出CSV

    表  2  两种算法计算量比较

    乘法次数加法次数FFT计算次数时间复杂度
    文献算法7QP+4Q2QP+3Q2QPO(QP)
    本文算法6QM+4M3QM+7MQ(M+1)+1O(QM)
    下载: 导出CSV

    表  3  算法计算时间随卫星个数变化表(s)

    卫星数量456789101112
    文献算法2.5072.5442.5672.5972.6412.6422.6892.6982.733
    本文算法0.2350.2680.2930.3130.3360.3550.3800.4020.421
    下载: 导出CSV
  • 吴仁彪, 王文益, 卢丹, 等. 卫星导航自适应抗干扰技术[M]. 北京: 科学出版社, 2015: 1–22.

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出版历程
  • 收稿日期:  2019-05-06
  • 修回日期:  2019-11-30
  • 网络出版日期:  2019-12-17
  • 刊出日期:  2020-06-04

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