Archives of Acoustics, 49, 2, pp. 221–231, 2024
10.24425/aoa.2024.148780

Analysis of Bottom Reverberation Intensity Under Beam-Controlled Emission Conditions in Deep Water

Guangying ZHENG
1) Science and Technology on Sonar Laboratory 2) Hangzhou Applied Acoustics Research Institute 3) Hanjiang National Laboratory
China

Xiaowei GUO
1) Science and Technology on Sonar Laboratory 2) Hangzhou Applied Acoustics Research Institute 3) Hanjiang National Laboratory
China

Fangwei ZHU
1) Science and Technology on Sonar Laboratory 2) Hangzhou Applied Acoustics Research Institute 3) Hanjiang National Laboratory
China

Fangyong WANG
1) Science and Technology on Sonar Laboratory 2) Hangzhou Applied Acoustics Research Institute 3) Hanjiang National Laboratory
China

Linlang BAI
1) Science and Technology on Sonar Laboratory 2) Hangzhou Applied Acoustics Research Institute 3) Hanjiang National Laboratory
China

A comprehensive understanding of the characteristics and the formation mechanism of reverberation is the key to improving the performance of the active target detection. In response to the challenge of analyzing the intensity of bottom reverberation in typical deep-sea environments, this study proposes a prediction method for the bottom reverberation intensity under beam-controlled emission conditions. It explains the variation law of bottom reverberation intensity under beam-controlled emission conditions in typical deep-sea environments of the South China Sea through theoretical and simulation analyses. Reverberation intensity of the deep-sea bottom under beam-controlled emission conditions exhibits significant fluctuations during the duration of reverberations in the direct sound zone of the seabed. This phenomenon is closely related to the directionality of the source emission, leading to intermittent reverberation masking and detectable areas in the active sonar detection. In addition, the duration of the high-reverberation zone near the cutoff distance of the direct sound from the seabed is longer under the beam-controlled emission conditions of the emission array located within the surface waveguide layer of the deep sea during winter.
Keywords: bottom reverberation; deep water; beam controlled emission; ray theory
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Copyright © 2023 The Author(s). This work is licensed under the Creative Commons Attribution 4.0 International CC BY 4.0.

References

Broschat S.L., Thorsos E.I. (1997), An investigation of the small slope approximation for scattering from rough surfaces. Part II. Numerical studies, The Journal of the Acoustical Society of America, 101(5): 2615–2625, doi: 10.1121/1.418502.

Collins M.D., Evans R.B. (1992), A two-way parabolic equation for acoustic backscattering in the ocean, The Journal of the Acoustical Society of America, 91(3): 1357–1368, doi: 10.1121/1.402465.

Cui X., Chi C., Li S., Li Z., Li Y., Huang H. (2023), Waveform design using coprime frequency-modulated pulse trains for reverberation suppression of active sonar, Journal of Marine Science and Engineering, 11(1): 28, doi: 10.3390/jmse11010028.

Ellis D.D., Crowe D.V. (1991), Bistatic reverberation calculations using a three-dimensional scattering function, The Journal of the Acoustical Society of America, 89(5): 2207–2214, doi: 10.1121/1.400913.

Ellis D.D., Haller D.R. (1987), A scattering function for bistatic reverberation calculations, The Journal of the Acoustical Society of America, 82(1): 124, doi: 10.1121/1.2024654.

Grauss R.C., Gragg R.F., Wurmser D., Fialkowski J.M., Nero R.W. (2002), Broadband models for predicting bistatic bottom, surface and volume scattering strengths, Naval Research Laboratory Report.

Guo X.Y., Su S.J., Wang Y.K. (2009), Research on the signal modeling method for sea bottom reverberation based on ray theory [in Chinese], Technical Acoustics, 28(3): 203–207.

Hao Y. et al. (2023), Underwater reverberation suppression via attention and cepstrum analysis-guided network, Journal of Marine Science and Engineering, 11(2): 313, doi: 10.3390/jmse11020313.

Lupien V.H., Bondaryk J.E., Baggeroer A.B. (1995), Acoustical ray-tracing insonification software modeling of reverberation at selected sites near the Mid-Atlantic Ridge, The Journal of the Acoustical Society of America, 98(5): 2987, doi: 10.1121/1.413929.

Mackenzie K.V. (1961), Bottom reverberation for 530- and 1030-cps sound in deep water, The Journal of the Acoustical Society of America, 33(11): 1498–1504, doi: 10.1121/1.1908482.

Porter M.B. (2011), The Bellhop Manual and User’s Guide: Preliminary Draft.

Qin J.X., Wang L.H., Li Z.L. (2019), Theory and experiment of large-depth reverberation in deep water [in Chinese], Technical Acoustics, 38(5): 95–96.

Thorsos E.I., Broschat S.L. (1995), An investigation of the small slope approximation for scattering from rough surfaces. Part I. Theory, The Journal of the Acoustical Society of America, 97(4): 2082–2093, doi: 10.1121/1.412001.

Urick R.J., Saling D.S. (1962), Backscattering of explosive sound from the deep-sea bed, The Journal of the Acoustical Society of America, 34(11): 1721, doi: 10.1121/1.1909106.

Weng J.B., Li F.H., Liu J.J. (2014), The preliminary study on bottom reverberation model in deep water [in Chinese], Technical Acoustics, 33(S2): 71–73.

Williams K.L., Jackson D.R. (1998), Bistatic bottom scattering: Model, experiments, and model data comparison, The Journal of the Acoustical Society of America, 103(1): 169–181, doi: 10.1121/1.421109.

Xu L., Yang K., Guo X., Li H. (2016), Bistatic bottom reverberation in deep ocean: Modeling and data comparison, [in:] OCEANS 2016 – Shanghai, pp. 1–5, doi: 10.1109/OCEANSAP.2016.7485385.

Xue R.Z., Duan R., Yang K.D., Ma Y.L., Guo Y. (2021), Modeling and analysis of monostatic incoherent boundary reverberation intensity in deep water, Acta Acoustica, 46(6): 926–938, doi: 10.15949/j.cnki.0371-0025.2021.06.014.

Zhang R.H., Jin G.L. (1987), Normal-mode theory of the average reverberation intensity in shallow water, Journal of Sound and Vibration, 119(2): 215–223, doi: 10.1016/0022-460X(87)90450-0.




DOI: 10.24425/aoa.2024.148780