Abstract
On the basis of an earlier developed model of sound scattering by surface disturbances characterized by 3D roughness spectra, we propose and test a sufficiently fast algorithm for calculating the spectral power density of surface reverberation that takes into account the propagation conditions, distance, and beam pattern of the receiver system. For a distance of up to 1000 m, a water area depth of ∼20 m, and actually measured 3D roughness spectra in the Doppler frequency range of ±5 Hz, we have calculated the frequency-angle reverberation spectra for an acoustic background-radiation signal of 1.5 kHz. The obtained angle and frequency reverberation characteristics are compared with the results of acoustic measurements conducted using linear horizontal receiver antennas.
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Original Russian Text © E.L. Borodina, B.M. Salin, M.B. Salin, 2012, published in Akusticheskii Zhurnal, 2012, Vol. 58, No. 6, pp. 710–722.
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Borodina, E.L., Salin, B.M. & Salin, M.B. Algorithms for converting 3D surface roughness spectra when calculating frequency-angle reverberation characteristics. Acoust. Phys. 58, 666–677 (2012). https://doi.org/10.1134/S1063771012060036
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DOI: https://doi.org/10.1134/S1063771012060036