Numerical Modeling of Underwater Acoustic Propagation using the Pseudo-spectral Method

The study of wave propagation problem has always been a hot topic in the field of underwater acoustics. Numerical simulation has always been an effective tool for studying the propagation of sound waves in complex media. The propagation characteristics of sound waves in complex ocean environments are also the main research content of ocean sound field analysis. In this paper, the pseudo-spectrum method is introduced for the problem of two-dimensional ocean sound field, a two-dimensional waveguide model is established through Fortran and Matlab programs, and different types of ocean sound field are analyzed, and the forward modeling problem is studied in combination with related contents of seismic oceanography. A typical seismic image in a two-dimensional sound field was simulated and calculated. The results show that the pseudo-spectrum method can be used for numerical simulation calculations of various underwater acoustic fields. The pseudo-spectrum method can effectively simulate the marine environment, thereby providing a new numerical simulation option for the research of ocean acoustics.