Abstract
To solve the problem of obtaining geoacoustic parameters of multi-layer seabed in shallow water, a geoacoustic inversion method based on Bayesian theory is studied in this paper. In this study, the seabed is assumed to be a horizontal layered elastic medium, and the error function is established according to the sound pressure field in the water layer and bayesian theory. The global optimization algorithm is used to obtain the three target parameters of wave velocity, density and wave velocity attenuation in each layer of the seabed. The designed optimization method can correct the parameters in the process of finding the solution according to the physical characteristics of the upper and lower layers. The simulation results show that this method greatly improves the stability and accuracy of the inversion results for the multi-layer seabed model.
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