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高动态场景下的极化空时零陷展宽算法

李润 王垚 郝放 张明程

李润,王垚,郝放,等. 高动态场景下的极化空时零陷展宽算法[J]. 北京航空航天大学学报,2023,49(5):1231-1237 doi: 10.13700/j.bh.1001-5965.2022.0501
引用本文: 李润,王垚,郝放,等. 高动态场景下的极化空时零陷展宽算法[J]. 北京航空航天大学学报,2023,49(5):1231-1237 doi: 10.13700/j.bh.1001-5965.2022.0501
LI R,WANG Y,HAO F,et al. Polarization space-time null broadening algorithm in high dynamic scenes[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(5):1231-1237 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0501
Citation: LI R,WANG Y,HAO F,et al. Polarization space-time null broadening algorithm in high dynamic scenes[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(5):1231-1237 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0501

高动态场景下的极化空时零陷展宽算法

doi: 10.13700/j.bh.1001-5965.2022.0501
基金项目: 国家重点研发计划(2019YFC1511504)
详细信息
    通讯作者:

    E-mail:cetc54wy@163.com

  • 中图分类号: TN973

Polarization space-time null broadening algorithm in high dynamic scenes

Funds: National Key R & D Program of China (2019YFC1511504)
More Information
  • 摘要:

    在高动态场景下,干扰源相对于抗干扰天线快速运动,传统抗干扰算法会零陷失配,导致抗干扰性能失效。为此,提出一种极化空时多维域联合的协方差矩阵锥化(CMT)算法。基于Laplace分布构造锥化矩阵来模拟干扰运动状态,通过锥化矩阵与原始协方差矩阵重构新的协方差矩阵实现零陷展宽,结合最小方差无失真响应(MVDR)准则求解阵列权矢量。仿真结果从波束方向图、输出性能和卫星捕获结果3个方面证实了所提算法在干扰位置快变情形下的稳健性,即使在干扰信号和导航信号具有相同的方位角和频带时,也能有效抑制干扰。

     

  • 图 1  极化空时滤波结构

    Figure 1.  Polarized space-time filtering structure

    图 2  空域波束方向图

    Figure 2.  Beam pattern with spatial domain

    图 3  极化域波束方向图

    Figure 3.  Beam pattern with polarization domain

    图 4  单干扰与双干扰下输出SINR随输入SNR变化关系

    Figure 4.  Output SINR versus input SNR under single interference and two interferences

    图 5  单干扰与双干扰下输出SINR随快拍数变化关系

    Figure 5.  Output SINR versus number of snapshot under single interference and two interferences

    图 6  输出SINR随干扰和导航信号方位角差值的关系

    Figure 6.  Output SINR versus azimuth difference of jamming signal and navigation signal

    图 7  卫星捕获结果

    Figure 7.  Results of satellite capture

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  • 被引次数: 0
出版历程
  • 收稿日期:  2022-06-17
  • 录用日期:  2022-09-16
  • 网络出版日期:  2022-10-11
  • 整期出版日期:  2023-05-31

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