| Issue |
E3S Web Conf.
Volume 196, 2020
XI International Conference “Solar-Terrestrial Relations and Physics of Earthquake Precursors”
|
|
|---|---|---|
| Article Number | 02017 | |
| Number of page(s) | 7 | |
| Section | Geophysical Fields and their Interactions | |
| DOI | https://doi.org/10.1051/e3sconf/202019602017 | |
| Published online | 16 October 2020 | |
Low-frequency parametric systems in the shallow sea
1 Southern Federal University, Taganrog, Russia
2 Harbin Engineering University, China
3 Far Eastern Federal University, Vladivostok, Russia
* Corresponding author: pivnev@mail.ru
The theoretical model of acoustic wave propagation in the ice-water layer is developed, with, taking into account the velocity dispersion. New opportunities for monitoring the marine environment on long routes, including those covered with ice, are discussed when using parametric sonar antennas. The results of research demonstrating single-mode excitation of a waveguide by a parametric array in a wide frequency band are presented. The possibility of compression of a broadband signal during its propagation, as a result of waveguide dispersion, which leads to an increasing of signal intensity, is shown. The results of experimental studies of the propagation characteristics of a wide-band acoustic signal of a parametric hydroacoustic array in a shallow sea are presented.
© The Authors, published by EDP Sciences, 2020
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