Abstract
Sound diffraction by a moving inhomogeneity in a shallow sea is considered as applied to a shadow observation system. An expression for the perturbation formed by a group of in-phase excited normal modes is obtained in the WKB approximation. The perturbation characteristics are estimated depending on the shadow contour of the inhomogeneity and the observation conditions. A small-parameter model of diffraction is proposed in the framework of the averaged description of a multimode pattern of the diffraction shading. Conditions for the model applicability are formulated
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. M. Gorskii, V. A. Zverev, A. L. Matveev, and V. V. Mityugov, Akust. Zh. 41, 223 (1995) [Acoust. Phys. 41, 190 (1995)].
V. M. Kuz’kin, Akust. Zh. 43, 514 (1997) [Acoust. Phys. 43, 440 (1997)].
V. A. Eliseevnin and Yu. I. Tuzhilkin, Akust. Zh. 41, 249 (1995) [Acoust. Phys. 41, 214 (1995)].
V. A. Grigor’ev and V. M. Kuz’kin, Akust. Zh. 41, 410 (1995) [Acoust. Phys. 41, 359 (1995)].
A. Sarkssian, J. Acoust. Soc. Am. 102, 825 (1997).
V. A. Grigoriev, B. G. Katsnelson, V. M. Kuz’kin, and V. G. Petnikov, Phys. Vibr. 7(3), 185 (1999).
V. A. Zverev, A. L. Matveev, and V. V. Mityugov, Akust. Zh. 41, 591 (1995) [Acoust. Phys. 41, 518 (1995)].
V. M. Kuz’kin, Akust. Zh. 46, 515 (2000) [Acoust. Phys. 46, 445 (2000)].
B. G. Katsnelson, V. A. Grigor’ev, V. M. Kuz’kin, and V. G. Petnikiov, J. Acoust. Soc. Am. 108, 2486 (2000).
V. N. Kulakov, N. E. Mal’tsev, and S. D. Chuprov, Akust. Zh. 29, 74 (1983) [Sov. Phys. Acoust. 29, 41 (1983)].
A. L. Virovlyanskii, Preprint No. 120, IPF AN SSSR (Inst. of Applied Physics, USSR Academy of Sciences, Gorki, 1985).
N. K. Uzunoglu and J. G. Fikioris, J. Acoust. Soc. Am. 72, 628 (1982).
V. M. Kuz’kin, Akust. Zh. 47, 483 (2001) [Acoust. Phys. 47, 591 (2001)].
Yu. A. Kravtsov, V. M. Kuz’kin, and V. G. Petnikov, Akust. Zh. 30, 339 (1984) [Sov. Phys. Acoust. 30, 199 (1984)].
L. N. Zakhar’ev and A. A. Lemanskii, Wave Scattering by “Black” Bodies (Sovetskoe Radio, Moscow, 1972).
A. I. Boiko, Akust. Zh. 29, 321 (1983) [Sov. Phys. Acoust. 29, 189 (1983)].
N. B. Konyukhova and T. V. Pak, Diffraction of a Plane Sound Wave by a Rigid Prolate Spheroid (VTs AN SSSR, Moscow, 1985).
V. A. Zverev, Akust. Zh. 40, 401 (1994) [Acoust. Phys. 40, 360 (1994)].
Ultrasound: A Small Encyclopedia (Sovetskaya Entsiklopediya, Moscow, 1979).
J. V. Candy and E. J. Sullivan, in Proceedings of 4th European Conference on Underwater Acoustics, Rome, Italy, 1998, Vol. 1, p. 3.
P. M. De Kooter, in Master’s Thesis. Naval Postgraduate School (Monterey, Calif., 1997).
K. B. Smith, J. Brune, and C. S. Chiu, in Proceedings of 4th European Conference on Underwater Acoustics, Rome, Italy, 1998, Vol. 1, p. 9.
Author information
Authors and Affiliations
Additional information
__________
Translated from Akusticheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 48, No. 1, 2002, pp. 77–84.
Original Russian Text Copyright © 2002 by Kuz’kin.
Rights and permissions
About this article
Cite this article
Kuz’kin, V.M. Sound diffraction by an inhomogeneity in an oceanic waveguide. Acoust. Phys. 48, 69–75 (2002). https://doi.org/10.1134/1.1435392
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1435392