Calculation of the reverberation spectrum for Doppler-based sonar

For monostatic sonar using long pulsed tone signals, the problem of evaluating the spectrum of reverberation due to sound wave scattering by a rough sea surface is solved. Relatively simple computational schemes are proposed, which make it possible (i) to transform the three-dimensional spectra of surface waves to the frequency-angular characteristics of reverberation and (ii) to choose the optimal operating frequency band for a Doppler sonar from the point of view of reverberation. For typical wind wave characteristics measured in shallow water areas, the spectral levels of reverberation are estimated in the frequency band of acoustic signals within 0.4?C2 kHz.