Vol. 10, no.2, 2018


Anatoly V. Sknarya, Anatoly A. Razin, Sergey A. Toshchov, Aleksey I. Demidov
V.V. Tikhomirov Scientific Research Institute of Instrument Design, https://niip.ru
Zhukovsky 140180, Moscow Region, Russian Federation
sknarya.a@otd301.niip.ru, razin.a@nio3.niip.ru, toshovserdey@mail.ru, aleksii-ad@yandex.ru

Received 10.09.2018
Abstract. Results of comparison of full-scale tests of active sonar systems - sonars with narrowband and ultra wideband (UWB) sounding signals with linear frequency modulation of pulses are presented. It is shown that the use of UWB signals with a large base allows to resolve multiple echo-signals from the target in the time domain, and a wide operating frequency band allows for an efficient spectral analysis of the received signal. The principal difference between the mutual-correlation functions of the echo signals for the cases of narrowband and UWB sounding is shown. Spectral portraits of targets, various in form and material, obtained with the use of UWB signals are presented. Sounding the targets with a UWB signal showed a higher degree of contrast and clarity of the acoustic images in comparison with the use of the narrowband signal. Thus, it is shown that UWB signals can be used to solve problems of recognition and classification of underwater objects in difficult conditions

Keywords: ultra-wideband signals, sonar, targets classification

UDC 621.396.96

RENSIT, 2018, 10(2):209-212 DOI: 10.17725/rensit.2018.10.209

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/259/10(2)209-212e.pdf