Sound diffusion structure based on time-varying sound speed profile of deep ocean
In underwater target detection,measuring the sound field in the target area is often necessary,which significantly increases the cost.This study investigates the differences in ray paths due to variations in time-varying deep-sea sound speed profiles using publicly available and measured sound speed data at the same geographic location.The aim is to optimize acoustic measurement procedures and reduce experimental costs.The computational results indicate that when direct ray paths exist,the sound speed profiles measured in the past few days can meet the requirements for sound propagation distance measurement;otherwise,the sound speed profiles need to be re-determined.
Acoustic ray arrival structureTime-varying sound speed profileAcoustic measurement