Nearfield acoustic holography based on intensity measurement and application in radiating analysis of underwater sound sources

Broadband acoustic holography based on intensity measurement (BAHIM) is a new and powerful field reconstruction technique.It allows one to predict the sound radiating field from a source and locate sound noise sources by measuring the near field sound intensity distribution on a measurement plane (hologram).In this paper,numerical analysis for different sources and parameters of the hologram at sample are given.Moreover,by the automated scanning two-hydrophones sound intensity measurement systems,the experiment is carried out and the BAHIM method is applied to sound field analysis of submerged spherical sound source.The results demonstrate the effectiveness of BAHIM.As a technique,the BAHIM can greatly enhance the ability for us to analyze and discern noise sources.