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基于SD-LCMV算法的FDA平台外干扰抑制

王博 谢军伟 张晶 葛佳昂

王博, 谢军伟, 张晶, 等 . 基于SD-LCMV算法的FDA平台外干扰抑制[J]. 北京航空航天大学学报, 2019, 45(11): 2247-2256. doi: 10.13700/j.bh.1001-5965.2019.0140
引用本文: 王博, 谢军伟, 张晶, 等 . 基于SD-LCMV算法的FDA平台外干扰抑制[J]. 北京航空航天大学学报, 2019, 45(11): 2247-2256. doi: 10.13700/j.bh.1001-5965.2019.0140
WANG Bo, XIE Junwei, ZHANG Jing, et al. FDA platform external interference suppression based on SD-LCMV algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(11): 2247-2256. doi: 10.13700/j.bh.1001-5965.2019.0140(in Chinese)
Citation: WANG Bo, XIE Junwei, ZHANG Jing, et al. FDA platform external interference suppression based on SD-LCMV algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(11): 2247-2256. doi: 10.13700/j.bh.1001-5965.2019.0140(in Chinese)

基于SD-LCMV算法的FDA平台外干扰抑制

doi: 10.13700/j.bh.1001-5965.2019.0140
基金项目: 

国家自然科学基金 61503408

详细信息
    作者简介:

    王博  男, 博士研究生。主要研究方向:频率分集阵列雷达信号处理及干扰抑制方法

    谢军伟  男, 博士, 教授, 博士生导师。主要研究方向:隐身与反隐身、雷达电子战

    张晶  女, 硕士, 讲师。主要研究方向:频率分集阵列雷达信号处理

    通讯作者:

    谢军伟.E-mail:xjw_xjw_123@163.com

  • 中图分类号: TN95

FDA platform external interference suppression based on SD-LCMV algorithm

Funds: 

National Natural Science Foundation of China 61503408

More Information
  • 摘要:

    针对频率分集阵列(FDA)接收机在抑制与目标位置接近的平台外干扰过程中,最小方差无失真响应(MVDR)波束形成器在阵元数较大、导向矢量失配情况下出现的主瓣畸变问题展开分析。在采用重叠正弦频率分集阵列接收结构代替一维均匀线性频率分集阵列(ULA-FDA)接收的基础上,通过可变加载约束的最速下降线性约束最小方差(SD-LCMV)准则求解导向矢量失配时的权矢量,实现对阵列方向图主瓣的有效纠偏和保形。仿真验证了采用正弦频控函数的重叠子阵FDA阵列具有最佳的主瓣宽度和低旁瓣特性。当存在2°的指向误差时,正弦频控函数的重叠子阵FDA阵列经导向矢量修正得到的阵列方向图在有效抑制干扰的同时能够实现主瓣的纠偏和保形。

     

  • 图 1  ULA-FDA基本结构

    Figure 1.  Basic configuration of ULA-FDA

    图 2  子阵FDA结构

    Figure 2.  Configuration of subarray-based FDAs

    图 3  PA的阵列方向图(N=30)

    Figure 3.  PA beampattern (N=30)

    图 4  基于MVDR的FDA-BFF阵列方向图(N=30)

    Figure 4.  FDA-BFF beampattern based on MVDR (N=30)

    图 5  基于MVDR的FDA-BFF阵列方向图(N=30)

    Figure 5.  FDA-BFF beampattern based on MVDR (N=30)

    图 6  基于MVDR的FDA-MIMO阵列方向图(N=9)

    Figure 6.  FDA-MIMO beampattern based on MVDR (N=9)

    图 7  基于MVDR的FDA-MIMO阵列方向图(N=30)

    Figure 7.  FDA-MIMO beampattern based on MVDR (N=30)

    图 8  基于TS-MVDR的FDA-MIMO阵列方向图(N=30)

    Figure 8.  FDA-MIMO beampattern based on TS-MVDR (N=30)

    图 9  子阵FDA发射方向图

    Figure 9.  Transmit beampattern of subarray-based FDA

    图 10  采用正弦频偏的子阵FDA发射波束图

    Figure 10.  Transmit beampattern of subarray-based FDA with sinusoidal frequency offset

    图 11  ULA-FDA发射方向图

    Figure 11.  ULA-FDA transmit beampattern

    图 12  重叠子阵sin-FDA发射方向图

    Figure 12.  Overlapping subarray-based sin-FDA transmit beampattern

    图 13  重叠子阵sin-FDA阵列方向图

    Figure 13.  Overlapping subarray-based sin-FDA beampattern

    图 14  存在指向误差时的PA阵列方向图

    Figure 14.  PA beampattern with pointing error

    图 15  存在指向误差时的FDA-BFF阵列方向图

    Figure 15.  FDA-BFF beampattern with pointing error

    图 16  存在指向误差时的重叠子阵sin-FDA阵列方向图

    Figure 16.  Overlapping subarray-based sin-FDA beampattern with pointing error

    图 17  3种机制的SINR比较

    Figure 17.  SINR comparison among three architectures

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出版历程
  • 收稿日期:  2019-04-01
  • 录用日期:  2019-06-28
  • 网络出版日期:  2019-11-20

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