Underwater broadband acoustic holography technique based on measurement of vector hydrophone array

Broadband acoustic holography based on intensity measurement(BAHIM) is a new technique developed for reconstruction of sources using near-field acoustic holography(NAH).With the sound intensity distribution on a cylinder measured,the complex sound pressure phase on the measureed cylinder can be obtained and the complex sound pressure can be predicted using BAHIM.In order to use this method to identify the noise source in an underwater cylindrical interior,the principle of the cylindrical BAHIM was presented.Then,numerical simulations were conducted.At last,the validity and correctness of vector hydrophone array were assessed by underwater near-field acoustic holography experiments.The experimental results using vector hydrophone array showed that the underwater cylindrical interior BAHIM works well in the reconstruction of sound field,identification and localization of the noise sources.