Low-frequency parametric systems in the shallow sea

Sergei Tarasov, Zhu Jianjun, Petr Pivnev, Mikhail Gubko, Z. Rakhmonov, A. Dmitriev, G. Vodinchar, N. Salikhov
2020 E3S Web of Conferences  
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
more » ... 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.
doi:10.1051/e3sconf/202019602017 fatcat:kfzcqijclba5tod5p2o7w56ide