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Interferometric Processing of Hydroacoustic Information in the Presence of Intense Internal Waves

  • UNDERWATER ACOUSTICS
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Abstract

The results of numerical simulation of interferometric processing of hydroacoustic information for two frequency ranges in the case where intense internal waves induce horizontal refraction of waves of a broadband-source field on a stationary path are presented and discussed. Two nonoverlapping spectral-density ranges are formed as a result of double Fourier transform of the interference pattern in the time–frequency domain. Filtering of these ranges and subjecting them to double inverse Fourier transform provides interference patterns of undisturbed and disturbed fields (i.e., patterns in the absence and in the presence of intense internal waves, respectively). The relative error in reconstructing the interference pattern of undisturbed field is estimated. Approaches to adaptation of the obtained results to the problems of underwater acoustic communication are proposed and outlined.

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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). E.S. Kaznacheeva's research was supported by the grant of President of Russian Federation MK-6144.2021.4.

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Authors and Affiliations

  1. Voronezh State University, 394006, Voronezh, Russia

    E. S. Kaznacheeva & S. A. Pereselkov

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

    V. M. Kuz’kin

Authors
  1. E. S. Kaznacheeva
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  2. V. M. Kuz’kin
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  3. S. A. Pereselkov
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Corresponding author

Correspondence to V. M. Kuz’kin.

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Translated by Yu. Sin’kov

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Kaznacheeva, E.S., Kuz’kin, V.M. & Pereselkov, S.A. Interferometric Processing of Hydroacoustic Information in the Presence of Intense Internal Waves. Phys. Wave Phen. 29, 278–284 (2021). https://doi.org/10.3103/S1541308X21030067

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  • DOI: https://doi.org/10.3103/S1541308X21030067

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