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Volume 21 Issue 3
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2013  >  21(3): 189-192
SUN Zhong-fu, SHENG Zhen-xin, LIU Rong-zhong, GUO Rui. Analysis of Underwater Explosion Signals via Hilbert-Huang Transform[J]. Journal of Unmanned Undersea Systems, 2013, 21(3): 189-192. doi: 10.11993/j.issn.1673-1948.2013.03.007
Citation: SUN Zhong-fu, SHENG Zhen-xin, LIU Rong-zhong, GUO Rui. Analysis of Underwater Explosion Signals via Hilbert-Huang Transform[J]. Journal of Unmanned Undersea Systems, 2013, 21(3): 189-192. doi: 10.11993/j.issn.1673-1948.2013.03.007
shu

Analysis of Underwater Explosion Signals via Hilbert-Huang Transform

doi: 10.11993/j.issn.1673-1948.2013.03.007
  • 1.

    Military Representative Office of Underwater Acoustic Navigation System in Shanghai Area, The people′s Liberation Army of China; Shanghai 201108, China

  • 2.

    School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 2013-01-29
  • Rev Recd Date: 2013-05-03
  • Publish Date: 2013-06-20
    Abstract
  • A test was conducted to study the characteristics of underwater explosion acoustic signals. The test data are processed in this paper with the Hilbert-Huang transform(HHT) method to obtain the Hilbert spectrum. According to the Hilbert spectrum, the underwater explosion acoustic signals are analyzed, and the formation mechanism of local energy extreme point is discussed. The results indicate that the Hilbert spectrum can show the frequency distribution and the time-frequency characteristic of energy of the underwater explosion acoustic signals. Local energy extreme point is formed due to interaction of acoustic ray trajectories and sea bottom.

     

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