Journal of Marine Science and Application

, Volume 16, Issue 1, pp 93–101 | Cite as

Characteristic analysis of underwater acoustic scattering echoes in the wavelet transform domain

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Abstract

Underwater acoustic scattering echoes have time–space structures and are aliasing in time and frequency domains. Different series of echoes properties are not identified when incident angle is unknown. This article investigates variations in target echoes of monostatic sonar to address this problem. The mother wavelet with similar structures has been proposed on the basis of preprocessing signal waveform using matched filter, and the theoretical expressions between delay factor and incident angle are derived in the wavelet domain. Analysis of simulation data and experimental results in free-field pool show that this method can effectively separate geometrical scattering components of target echoes. The time delay estimation obtained from geometrical echoes at a single angle is consistent with target geometrical features, which provides a basis for object recognition without angle information. The findings provide valuable insights for analyzing elastic scattering echoes in actual ocean environment.

Keywords

underwater acoustic scattering echoes geometrical scattering components time delay estimation wavelet transform 

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References

  1. Anderson SD, 2011. Time-frequency methods for the analysis of multistaic acoustic scattering of elastic shells in shallow water. MS Thesis, Georgia Institute of Technology, 8–29.Google Scholar
  2. Anderson SD, Sabra KG, Zakharia ME, Sessarego JP, 2012. Time-frequency analysis of the bistatic acoustic scattering from a spherical elastic shell. The Journal of the Acoustical Society of America, 131, 164–173. DOI: 10.1121/1.3669995CrossRefGoogle Scholar
  3. Bucaro JA, Houston BH, Saniga M, Dragonette LR, Yoder T, Dey S, Kraus L, Carin L, 2008. Broadband acoustic scattering measurements of underwater unexploded ordnance. The Journal of the Acoustical Society of America, 123, 738–746. DOI: http://doi.org/10.1121/1.2821794CrossRefGoogle Scholar
  4. Decultot D, Lietard R, Maze G, 2010. Classification of a cylindrical target buried in a thin sand-water mixture using acoustic spectra. The Journal of the Acoustical Society of America, 127, 1328–1344. DOI: http://dx.doi.org/10.1121/1.3298430CrossRefGoogle Scholar
  5. Doolittle R D, Uberall H, Ugincius P, 1968. Sound scattering by elastic cylinders. The Journal of the Acoustical Society of America, 43(1), 1–14.CrossRefGoogle Scholar
  6. Fan J, 2001. Study on echo characteristics of underwater complex targets. PhD Thesis, Shanghai Jiaotong University, 30–62.Google Scholar
  7. Jansen M, Uytterhoeven G, Bultheel A, 1999. Image de-noising by integer wavelet transforms and generalized cross validation. Medical Physics, 26, 622.CrossRefGoogle Scholar
  8. Jiao LC, Tan S, 2003. Development and prospect of image multiscale geometrical analysis. Acta Electronica Sinica, 31, 12A.Google Scholar
  9. Leon H, 1999. Wavelet transforms for bioacoustics signal processing. The Journal of the Acoustical Society of America, 106, 2129.Google Scholar
  10. Li XK, 2000. Extraction and recognition of features of underwater target. PhD Thesis, Journal of Harbin Engineering University, 58–63.Google Scholar
  11. Li XK, Guo XS, Xu TY, Meng XX, 2015. Research on the method to extract the elastic scattering of underwater target based on wavelet transform. Technical Acoustics, 34(2), 314–346Google Scholar
  12. Li XK, Meng XX, Xia Z, 2015. Characteristics of the geometrical scattering waves from underwater target in fractional domain Fourier transform domain. Acta Phys. Sin., 64(6), 064302.Google Scholar
  13. Li XK, Yang SE, 2001. Extraction of features of underwater target. Journal of Harbin Engineering University, 22, 25–29.Google Scholar
  14. Pan A, Fan J, Zhuo LK, 2012. Acoustic scattering from a finite periodically bulkheads in cylindrical shell. Acta Phys. Sin., 61(21), 214301. DOI: 10.7498/aps.61.214301Google Scholar
  15. Pan A, Fan J, Zhuo LK, 2013. Acoustic scattering from a finite quasi-periodic bulkhead cylindrical shell. Acta Phys. Sin., 62, 024301. DOI: 10.7498/aps.62.024301Google Scholar
  16. Tang WL, 1994. Highlight model of echoes from sonar targets. Acta Acustica, 19(2), 92.Google Scholar
  17. Tang WL, Chen DZ, 1988. Echo structure of sound scattering by a finite elastic cylinder in water. Acta Acustica, 13(1), 29–36.Google Scholar
  18. Tesei A, Fawcett JA, Lim R, 2008. Physics-based detection of man-made elastic objects buried in high-density-clutter areas of saturated sediments. Applied Acoustics, 69, 422–437. DOI: http://dx.doi.org/10.1016/j.apacoust.2007.04.002CrossRefGoogle Scholar
  19. Zhang LG, Sun NH, Marston PL, 1992. Midfrequency enhancement of the backscattering of tone bursts by thin spherical shells. The Journal of the Acoustical Society of America, 91(4), 1862–1874.CrossRefGoogle Scholar
  20. Zheng GY, Fan J, Tang WL, 2010. Acoustic scattering from fluid-filled cylindrical shell in water:. Experiment. Acta Acustica, 35, 31–37.Google Scholar

Copyright information

© Harbin Engineering University and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Mei Yang
    • 1
    • 2
  • Xiukun Li
    • 1
    • 2
  • Yang Yang
    • 1
    • 2
  • Xiangxia Meng
    • 1
    • 2
  1. 1.Acoustic Science and Technology LaboratoryHarbin Engineering UniversityHarbinChina
  2. 2.College of Underwater Acoustic EngineeringHarbin Engineering UniversityHarbinChina

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