Modeling and analysis of monostatic incoherent boundary reverberation intensity in deep water

In order to study the impact of multipath propagation in deep water and the boundary characteristics on the attenuation of monostatic boundary reverberation, the boundary reverberation intensity is described as the incoherent sum of reverberation attenuation in different paths. The parameterized multipath reverberation intensity model based on scattering theory of physical mechanism is established. Simulations and theoretical analysis are made to study the attenuation of multipath reverberation intensity, the distribution of multipath reverberation arrival angles and the impact of physical parameters on reverberation intensity. The validity of model is verified using experimental data in the south China sea basin (typical mud bottom). The simulation results show that the attenuation of boundary reverberation presents a multi-peak structure and the time that these peaks appear is in agreement with the arrival time distribution of multipath reverberation. When the source and receiver are both near the surface, the intensity of first peak and its attenuation process are determined by wind speed. The intensity of other peaks is determined by the characteristics of both bottom and surface, while the attenuation process is determined mainly by the parameters of bottom.