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Mode Selection in Oceanic Waveguides

  • HYDRODYNAMICS OF THE MARINE ENVIRONMENT
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Abstract

A method is proposed for selecting modes and estimating their parameters in shallow water using a single receiver. The method is based on the two-dimensional time–frequency Fourier transform of the moving-source field. The spectral density given by the integral transform is concentrated in the form of focal spots, corresponding to individual modes. A relationship of the mode phase and group velocities with the coordinates of focal-spot peaks is established. Filtering of focal spots and application of the two-dimensional inverse Fourier transform to them reconstructs the fields of selected modes. The results of numerical simulation are presented. The reconstructed modal parameters (amplitude, real part of horizontal wave number, group velocity, damping coefficient) are estimated.

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Funding

This study was supported by the Russian Foundation for Basic Research (project nos. 19-29-06075 and 19-38-90326).

D.Yu. Prosovetskii acknowledges the support of the President of the Russian Federation (grant no. MK-6144.2021.4).

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Authors and Affiliations

  1. Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia

    V. M. Kuz’kin

  2. Institute of Marine Technology Problems, Far East Branch, Russian Academy of Sciences, 690091, Vladivostok, Russia

    Yu. V. Matvienko

  3. Voronezh State University, 394006, Voronezh, Russia

    S. A. Pereselkov, D. Yu. Prosovetskii & E. S. Kaznacheeva

Authors
  1. V. M. Kuz’kin
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  2. Yu. V. Matvienko
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  3. S. A. Pereselkov
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  4. D. Yu. Prosovetskii
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  5. E. S. Kaznacheeva
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Corresponding author

Correspondence to V. M. Kuz’kin.

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The authors declare that they have no conflicts of interest.

Additional information

Translated by Yu. Sin’kov

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Kuz’kin, V.M., Matvienko, Y.V., Pereselkov, S.A. et al. Mode Selection in Oceanic Waveguides. Phys. Wave Phen. 30, 111–118 (2022). https://doi.org/10.3103/S1541308X22020030

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  • DOI: https://doi.org/10.3103/S1541308X22020030

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