Abstract
The effect of intermodal correlations on the efficiency of the spatial processing of a signal in oceanic waveguides with a perturbed surface is studied. An algorithm of calculating the correlation matrix of a signal on the aperture of a horizontal antenna array with allowance for the interferential structure of an acoustic field in the sound channel is proposed. The antenna gain factor is analyzed for three spatial-processing methods, such as the standard phased antenna array, optimal linear processing, and optimal quadratic optimization techniques. The results of numerical modeling for the hydrological conditions of the Barents Sea in the winter period are given. Particular attention is paid to interferential oscillations in the gain factor of an antenna array and the dependence of its values “smoothened” at the scale of the interferential structure of an acoustic field in a waveguide on the problem parameters.
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REFERENCES
B. Katsnelson, V. Petnikov, and J. Lynch, Fundamentals of Shallow Water Acoustics (Springer, New York, Dordrecht, Heildelberg, London, 2012).
F. B. Jensen, W. A. Kuperman, M. B. Porter, and H. Schmidt, Computational Ocean Acoustics (Springer, New York, Dordrecht, Heildelberg, London, 2011).
E. Yu. Gorodetskaya, A. I. Malekhanov, A. G. Sazontov, and V. A. Farfel’, Acoust. Phys. 42 (5), 543 (1996).
N. A. Zavol’skii, A. I. Malekhanov, and M. A. Raevskii, Acoust. Phys. 65 (5), 507 (2019).
V. G. Burdukovskaya, A. I. Malekhanov, and M. A. Raevsky, Acoust. Phys. 67 (6), 610 (2021).
M. A. Raevskii and V. G. Burdukovskaya, Akust. Zh. (in press).
M. A. Raevskii and A. I. Khil’ko, Acoust. Phys. 61 (3), 340 (2015).
M. A. Raevskii and V. G. Burdukovskaya, Acoust. Phys. 67 (1), 56 (2021).
R. A. Monzingo and T. W. Miller, Introduction to Adaptive Arrays (Wiley, 1980; Radio i svyaz’, Moscow, 1986).
C. R. Baker, IEEE Trans. Commun. Tech. 14 (6), 802 (1966).
D. R. Morgan and T. M. Smith, J. Acoust. Soc. Am. 87 (2), 737 (1990).
A. I. Malekhanov and V. I. Talanov, Sov. Phys. Acoust. 36 (5), 496 (1990).
V. V. Artel’nyi and M. A. Raevskii, Izv. Vyssh. Uchebn. Zaved., Radiofiz. 27 (9), 1142 (1984).
N. S. Gorskaya and M. A. Raevskii, Sov. Phys. Acoust. 32 (2), 165 (1986).
L. M. Brekhovskikh and Yu. P. Lysanov, Theoretical Foundations of Ocean Acoustics (Nauka, Moscow, 2007) [in Russian].
Nechaev A.G. Sov. Phys. Acoust. 33 (3), 535 (1987).
I. N. Davidan, L. I. Lopatukhin, and V. A. Rozhkov, Wind Waving in the World’s Ocean (Gidrometeoizdat, Leningrad, 1985) [in Russian].
B. G. Kantsel’son and V. G. Petnikov, Acoustics of Shallow Sea (Nauka, Moscow, 1997) [in Russian].
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This study was supported by the Russian Scientific Foundation, grant no. 20-19-00383.
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Translated by E. Glushachenkova
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Raevskii, M.A., Burdukovskaya, V.G. Effect of Intermodal Correlations on the Efficiency of the Spatial Processing of Acoustic Signals in an Oceanic Waveguide with a Perturbed Surface. Acoust. Phys. 68, 582–593 (2022). https://doi.org/10.1134/S1063771022060100
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DOI: https://doi.org/10.1134/S1063771022060100