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首页> 外文期刊>Quality Control, Transactions >Measurement of the Acoustic Reflection Coefficient of Materials Based on Signal Subspace Decomposition Using a Single Vector Hydrophone
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Measurement of the Acoustic Reflection Coefficient of Materials Based on Signal Subspace Decomposition Using a Single Vector Hydrophone

机译：基于信号子空间分解的基于信号子空间分解的材料反射系数测量

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摘要

A method is presented for measuring the reflection coefficient of underwater acoustic materials in the free field with a single vector hydrophone. The main advantage of this method is that the incident and reflected signals are separated in the signal subspace without considering the aliasing of direct and reflected signals in the time domain. The postprocessing inverse filter technology is introduced into the measurement. The signal distortion caused by the transfer function of the measurement system is compensated for the postprocessing inverse filter, which is conducive to eliminating the interference of the edge diffraction. The basic mechanism is based on signal subspace decomposition and postprocessing inverse filter technology. Numerical simulations are presented to demonstrate the advantages of the method. The findings are confirmed by an underwater experiment conducted with a single vector hydrophone. The experimental results show that a satisfactory reflection coefficient can be obtained using this method, and the results agree well with the numerical predictions. The relative error of the measurement results is no more than 20%.
机译：提出了一种用单个载体水电管测量自由场中的水下声学材料的反射系数。该方法的主要优点是入射和反射信号在信号子空间中分离，而不考虑时域中的直接和反射信号的混叠。后处理逆滤波技术被引入测量。由测量系统的传递函数引起的信号失真被补偿后处理逆滤波器，其有利于消除边缘衍射的干扰。基本机制基于信号子空间分解和后处理逆滤波技术。提出了数值模拟以证明该方法的优点。通过用单载体水下的水下实验证实了发现。实验结果表明，可以使用该方法获得令人满意的反射系数，结果与数值预测相一致。测量结果的相对误差不超过20％。

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  • 来源
    《Quality Control, Transactions》 |2020年第2020期|3718-3727|共10页
  • 作者

    Shi Shengguo; Wang Chao; Hu Bo; Li Ying;

  • 作者单位

    Harbin Engn Univ Acoust Sci & Technol Lab Harbin 150001 Peoples R China|Harbin Engn Univ Key Lab Marine Informat Acquisit & Secur Minist Ind & Informat Technol Harbin 150001 Heilongjiang Peoples R China|Harbin Engn Univ Coll Underwater Acoust Engn Harbin 150001 Peoples R China;

    Harbin Engn Univ Coll Underwater Acoust Engn Harbin 150001 Peoples R China;

    Harbin Engn Univ Acoust Sci & Technol Lab Harbin 150001 Peoples R China|Harbin Engn Univ Key Lab Marine Informat Acquisit & Secur Minist Ind & Informat Technol Harbin 150001 Heilongjiang Peoples R China|Harbin Engn Univ Coll Underwater Acoust Engn Harbin 150001 Peoples R China;

    Harbin Engn Univ Coll Underwater Acoust Engn Harbin 150001 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Acoustic reflection coefficient measurement; vector hydrophone; free field; signal subspace decomposition;

    机译：声反射系数测量;矢量水听器;自由场;信号子空间分解;

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