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GNSS抗干扰天线阵不一致性对MUSIC算法的影响

俞立宏 秦红磊 李武涛 郎荣玲

俞立宏, 秦红磊, 李武涛, 等 . GNSS抗干扰天线阵不一致性对MUSIC算法的影响[J]. 北京航空航天大学学报, 2016, 42(8): 1747-1754. doi: 10.13700/j.bh.1001-5965.2015.0497
引用本文: 俞立宏, 秦红磊, 李武涛, 等 . GNSS抗干扰天线阵不一致性对MUSIC算法的影响[J]. 北京航空航天大学学报, 2016, 42(8): 1747-1754. doi: 10.13700/j.bh.1001-5965.2015.0497
YU Lihong, QIN Honglei, LI Wutao, et al. Influence of inconsistence of GNSS anti-jamming antenna array on MUSIC algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(8): 1747-1754. doi: 10.13700/j.bh.1001-5965.2015.0497(in Chinese)
Citation: YU Lihong, QIN Honglei, LI Wutao, et al. Influence of inconsistence of GNSS anti-jamming antenna array on MUSIC algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(8): 1747-1754. doi: 10.13700/j.bh.1001-5965.2015.0497(in Chinese)

GNSS抗干扰天线阵不一致性对MUSIC算法的影响

doi: 10.13700/j.bh.1001-5965.2015.0497
基金项目: 国家自然科学基金(61202078)
详细信息
    作者简介:

    俞立宏,男,硕士研究生。主要研究方向:卫星导航抗干扰。Tel.:010-82316487。E-mail:bn_ylh@sina.com;郎荣玲,女,博士,副教授,硕士生导师。主要研究方向:卫星导航抗干扰技术。Tel.:010-82316487。E-mail:ronglinglang@163.com

    通讯作者:

    郎荣玲,Tel.:010-82316487,E-mail:ronglinglang@163.com

  • 中图分类号: TN911.72

Influence of inconsistence of GNSS anti-jamming antenna array on MUSIC algorithm

  • 摘要: 由于天线阵元位置、射频(RF)放大器和模数转换器(ADC)等因素的影响,全球卫星导航系统(GNSS)抗干扰天线阵各通道间不可避免地存在着不一致性。首先,利用矩阵中的子空间理论分析了通道的幅度不一致性和相位不一致性对多重信号分类(MUSIC)算法的影响。理论分析结果表明:单干扰情况下通道幅度不一致性会降低MUSIC算法方向图的零陷深度,但不影响零陷位置,相位不一致性对MUSIC算法方向图零陷位置和零陷深度均有影响;多干扰情况下通道幅度不一致性和相位不一致性对MUSIC算法方向图零陷位置零陷和深度都有影响。因此在通道不一致性慢变化的条件下,MUSIC算法利用方向图进行性能评估时需要测出通道幅相偏差矩阵进行方向图纠正。然后,利用仿真的方法对不一致性的影响进行了实验分析,实验分析结果与理论分析结果一致。

     

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出版历程
  • 收稿日期:  2015-07-25
  • 网络出版日期:  2016-08-20

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