A theory of interferometric processing of hydroacoustic data using an extended antenna is presented. An explicit relationship between the 2D spectral density of double Fourier transform of the interference pattern formed by a moving source and the aperture and angular dependence of received field is derived. The gain, antenna directional characteristic, and processing noise immunity are estimated. The results of numerical simulation are presented and discussed. Some ways to adapt the results obtained to the problems of solid-state acoustics using the space–time analogy are proposed and outlined.
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This study was supported in part by the Russian Foundation for Basic Research, project nos. 19-08-00941 and 19-29-06075.
I.V. Kaznacheev acknowledges the support of the President of the Russian Federation (grant no. MK-933.2019.8).
Translated by Yu. Sin’kov
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Kaznacheev, I.V., Kuz’kin, V.M., Kutsov, M.V. et al. Interferometry in Acoustic-Data Processing Using Extended Antennas. Space–Time Analogy. Phys. Wave Phen. 28, 326–332 (2020). https://doi.org/10.3103/S1541308X20040068