Analysis and Simulationof Vector Acoustic Field based on Parabolic Equation Method

Sound propagation in the ocean is a classical underwater acoustic research problem.In traditional studies,researchers are primarily concerned about sound pressure fields and ignore the joint processing between particle velocities and sound pressure,and the studies for the vector acoustic field of low frequency are also lacking.Aim at the above-mentioned issues,calculation model of vector acoustic field was given by Euler equations,and parabolic equation method was used to calculate sound pressure.The numerical solutions of vector field parameters,such as particle velocity of acoustic field,were given using difference method.It analyzed the vector acoustic field in shallow sea overlying an elastic bottom.Simulation results indicate that using parabolic equation method can quickly and accurately calculate the vector acoustic field of marine environment and implement the joint processing between particle velocity and sound pressure.It can be applied to the rapid prediction of vector acoustic field.