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频率分集阵列对干涉仪的角度欺骗效果

葛佳昂 谢军伟 张浩为 冯晓宇 张晶

葛佳昂, 谢军伟, 张浩为, 等 . 频率分集阵列对干涉仪的角度欺骗效果[J]. 北京航空航天大学学报, 2019, 45(1): 183-191. doi: 10.13700/j.bh.1001-5965.2018.0191
引用本文: 葛佳昂, 谢军伟, 张浩为, 等 . 频率分集阵列对干涉仪的角度欺骗效果[J]. 北京航空航天大学学报, 2019, 45(1): 183-191. doi: 10.13700/j.bh.1001-5965.2018.0191
GE Jiaang, XIE Junwei, ZHANG Haowei, et al. Angle deception effect of frequency diversity array on interferometer[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(1): 183-191. doi: 10.13700/j.bh.1001-5965.2018.0191(in Chinese)
Citation: GE Jiaang, XIE Junwei, ZHANG Haowei, et al. Angle deception effect of frequency diversity array on interferometer[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(1): 183-191. doi: 10.13700/j.bh.1001-5965.2018.0191(in Chinese)

频率分集阵列对干涉仪的角度欺骗效果

doi: 10.13700/j.bh.1001-5965.2018.0191
基金项目: 

国家自然科学基金 61503408

详细信息
    作者简介:

    葛佳昂  男, 博士研究生。主要研究方向:雷达信号处理

    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

    通讯作者:

    谢军伟, E-mail: xjw_xjw_123@163.com

  • 中图分类号: TN974

Angle deception effect of frequency diversity array on interferometer

Funds: 

National Natural Science Foundation of China 61503408

More Information
  • 摘要:

    针对干涉仪的测向隐蔽性问题,提出了一种基于频率分集阵列(FDA)对干涉仪的角度欺骗方法。干涉仪通过求取各天线接收到信号的相位差确定信号到达角,而FDA由于各阵元具有微小频偏造成其相位差并不满足求解关系,从而实现角度欺骗。首先,利用模型建立法和欧拉公式法2种方法建立了FDA波束相位模型;然后,从建立的2种模型出发,论证了FDA发出信号对干涉仪具有角度欺骗效果;最后,仿真分析了干扰距离、阵元间距、发射频率、频率增量等因素的影响。理论分析与仿真结果表明,FDA对处于远场的干涉仪目标有良好的欺骗效果。

     

  • 图 1  均匀线性FDA结构

    Figure 1.  Uniform linear FDA structure

    图 2  FDA阵列目标探测示意图

    Figure 2.  Schematic of FDA array target detection

    图 3  一维单基线相位干涉仪系统

    Figure 3.  One-dimensional single-baseline phase interferometer system

    图 4  d1对Δx影响示意图(Δf=1 kHz,N=2, 5, 8)

    Figure 4.  Schematic of impact of d1 on Δxf=1 kHz, N=2, 5, 8)

    图 5  d1对Δx影响示意图(Δf=10 kHz,N=2, 5, 8)

    Figure 5.  Schematic of impact of d1 on Δxf=10 kHz, N=2, 5, 8)

    图 6  d1对Δx影响示意图(Δf=100 kHz,N=2, 5, 8)

    Figure 6.  Schematic of impact of d1 on Δxf=100 kHz, N=2, 5, 8)

    图 7  Za对Δx影响示意图(Δf=10 kHz, N=5)

    Figure 7.  Schematic of impact of Za on Δxf=10 kHz, N=5)

    图 8  d对Δx影响示意图(Δf=10 kHz, N=5)

    Figure 8.  Schematic of impact of d on Δxf=10 kHz, N=5)

    图 9  f0对Δx影响示意图(Δf=10 kHz, N=5)

    Figure 9.  Schematic of impact of f0 on Δxf=10 kHz, N=5)

    表  1  不同频率增量Δf、阵元数N与干涉仪天线间距d1下的Xa临界值

    Table  1.   Critical value of Xa with different frequency offset Δf, array element numbers N, and interferometer antenna distances d1

    N d1/m Xa临界值/km
    Δf=1 kHz Δf=10 kHz Δf=100 kHz
    2 0.1 15.539 6.647 2.000
    0.15 16.554 7.151 2.269
    0.3 19.034 8.369 2.929
    5 0.1 13.715 5.731 01.476 8
    0.15 14.052 5.901 1.609 5
    0.3 14.978 6.366 5 1.851 2
    8 0.1 13.414 05.572 5 01.449 7
    0.15 13.617 5 5.678 5 1.499 5
    0.3 14.191 5 5.970 6 1.593 4
    下载: 导出CSV

    表  2  不同z轴距离Za下的Xa临界值

    Table  2.   Critical value of Xa with different z-axis distances Za

    km
    Za 1 2 3 4 5
    Xa 2.530 7 3.896 4.893 5 5.901 6.702
    下载: 导出CSV

    表  3  不同FDA阵元间距d下的Xa临界值

    Table  3.   Critical value of Xa with different FDA array element intervals d

    d/m 0.15 0.3 0.45 0.6 0.75
    Xa/km 5.901 7.495 8.624 4 9.857 6 10.302 7
    下载: 导出CSV

    表  4  不同FDA初始频率f0下的Xa临界值

    Table  4.   Critical value of Xa with different FDA initial frequency f0

    f0/GHz 1 3 5 7 9
    Xa/km 5.901 9.102 10.980 12.385 13.515
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-04-09
  • 录用日期:  2018-08-24
  • 网络出版日期:  2019-01-20

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