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基于双曲调频的组合波形设计研究

贾耀君 蔡志明 王平波

贾耀君, 蔡志明, 王平波. 基于双曲调频的组合波形设计研究[J]. 电子与信息学报, 2023, 45(12): 4352-4360. doi: 10.11999/JEIT221385
引用本文: 贾耀君, 蔡志明, 王平波. 基于双曲调频的组合波形设计研究[J]. 电子与信息学报, 2023, 45(12): 4352-4360. doi: 10.11999/JEIT221385
JIA Yaojun, CAI Zhiming, WANG Pingbo. Research on Combination Waveform Design Based on Hyperbolic Frequency Modulation[J]. Journal of Electronics & Information Technology, 2023, 45(12): 4352-4360. doi: 10.11999/JEIT221385
Citation: JIA Yaojun, CAI Zhiming, WANG Pingbo. Research on Combination Waveform Design Based on Hyperbolic Frequency Modulation[J]. Journal of Electronics & Information Technology, 2023, 45(12): 4352-4360. doi: 10.11999/JEIT221385

基于双曲调频的组合波形设计研究

doi: 10.11999/JEIT221385
详细信息
    作者简介:

    贾耀君:男,博士生,研究方向为水声信号与信息处理

    蔡志明:男,教授,博士生导师,研究方向为水声信号与信息处理

    王平波:男,教授,博士生导师,研究方向为水声信号与信息处理

    通讯作者:

    王平波 blackberet@163.com

  • 中图分类号: TN911.7

Research on Combination Waveform Design Based on Hyperbolic Frequency Modulation

  • 摘要: 主动声呐通常采用的单频或调频波形时频耦合分辨能力弱,不利于混响背景下的信号检测与估计。先前工作表明,“V”和“W”形双曲调频(HFM)组合波形可以实现距离-速度高分辨和低混响输出,其中W-HFM波形还有效解决了V-HFM波形在多目标场景中的虚假目标问题,但是设计复杂、运算量大。为优化HFM组合波形的设计和应用,该文推导了HFM组合波形的峰脊线斜率表达式。一方面提出V-HFM波形的最小无虚警距离(MNFAD)指标,分析了其多目标适用性;另一方面以典型的W-HFM波形为例,提出了优化的波形设计方案,对工程应用具有指导意义。水池实验数据表明,HFM组合波形实现了距离-速度高分辨、混响输出降低5 dB以上,并且W-HFM波形还抑制了虚假目标干扰。
  • 图  1  HFM组合波形的时域分解图

    图  2  HFM组合波形的时频图、单目标常规模糊图和非线性模糊图

    图  3  HFM组合波形的双目标常规模糊图和非线性模糊图

    图  4  组合波形的匹配过程模型

    图  5  V-HFM的双目标模型

    图  6  4个子波的调频曲线

    图  7  最优设计波形的模糊图和非线性模糊度图

    图  8  水池实验态势

    图  9  实验数据的非线性模糊图

    图  10  模糊度图(-6 dB)

    图  11  Q函数图

    表  1  组合结果

    序号组合顺序最小夹角(°)跳频点数序号组合顺序最小夹角(°)跳频点数
    1a-b-c-d0213c-a-b-d16.42
    2a-b-d-c6.9214c-a-d-b8.13
    3a-c-b-d6.5215c-b-a-d21.81
    4a-c-d-b6.5316c-b-d-a18.41
    5a-d-b-c6.9317c-d-a-b4.31
    6a-d-c-b0218c-d-b-a9.22
    7b-a-c-d6.9219d-a-b-c01
    8b-a-d-c0220d-a-c-b01
    9b-c-a-d20.6321d-b-a-c7.12
    10b-c-d-a13.4222d-b-c-a10.33
    11b-d-a-c7.1223d-c-a-b02
    12b-d-c-a13.4324d-c-b-a4.91
    下载: 导出CSV

    表  2  回波理论距离

    序号理论距离(m)
    11.05
    21.45
    31.91
    42.80
    53.15
    63.30
    73.53
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-11-04
  • 修回日期:  2023-06-07
  • 网络出版日期:  2023-06-19
  • 刊出日期:  2023-12-26

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