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



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.


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


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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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