Vol. 12, no.4, 2020


Interferometric Processing of Acoustic Information by Using Extended Antennas in Dispersing Media

Venedikt M. Kuz'kin

A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, http://www.gpi.ru/
Moscow 119991, Russian Federation
E-mail: kumiov@yandex.ru
Sergey A. Pereselkov, Sergey A. Tkachenko, Ilia V. Kaznacheev
Voronezh State University, http://www.vsu.ru/
Voronezh 394006, Russian Federation
E-mail: pereselkov@yandex.ru; sega-tk@mail.ru; kaznacheev.ilya@gmail.com

Received May 05, 2020, peer-reviewed May 26, 2020, accepted June 01, 2020

Abstract. The theory of interferometric processing of acoustic information by using extended antennas in media with frequency dispersion is presented. The dependence between the two-dimensional spectral density of the two-fold Fourier transform of the interference pattern formed by a moving noise source and the aperture and angular structure of the received field is analyzed. The gain factor, directivity characteristic, and noise immunity of processing are estimated. Depending between the input signal/noise ratio on the antenna element and the maximal range of the noise source is obtained. This maximal range allows stable detection and estimation of direction, radial velocity, range and depth are close to real values. Numerical simulation results are presented and discussed.

Keywords: dispersion, interferogram, hologram, noise source, extended antennas, gain, directional characteristic, noise immunity, limiting offset, numerical simulation

UDC 004.052.34

RENSIT, 2020, 12(3):483-494. DOI: 10.17725/rensit.2020.12.483.

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/361/12(4)483-494e.pdf