Comparison of description methods of the parametric radiating antenna when calculating the acoustic pressure at the difference frequency when radiating a broadband signal for vertical sonar sensing systems

Provides a comparative analysis of the calculation methods of a parametric antenna when radiating a broadband signal in relation to three vertical sonar sensing systems – echosounder, ice fathometer and bottom soil profiling device. The dependence of the acoustic pressure on the difference frequency of the parametric radiating antenna is shown, as well as the dependence of the required acoustic pressure on the complexity of the radiated signal for various description methods – Moffett–Mellen method, Khokhlov–Zabolotskaya–Kuznetsov equation and wavefront method. It has been found that with an increase in the complexity of the sounding signal, less acoustic pressure is required (compared to a system with a smaller complexity) to measure distances under specified hydrological conditions.

Authors: A. S. Vorotyntseva, A. A. Alimov

Direction: Physics

Keywords: parametric radiating antenna, broadband signal, vertical sensing, nonlinear acoustics

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