Study of the Doppler spectrum of surface reverberation using numerical simulation

We perform a numerical experiment to investigate how the surface reverberation spectrum changes with the intensity of the surface waves. We focus on the sound in the middle frequency range of 1 to 5 kHz, the scattering of which depends significantly on the state of the sea surface and may not be resonant. The novelty of this work is that we use an accurate diffraction model and a surface wave model that takes into account the nonlinear interaction between the surface harmonics.