| || Underwater Applications of Acoustical Holography
Author : Mehta, P. C.
Source : Defence Science Journal ; Vol:34(1) ; 1984 ; pp 97-110
Subject : 534.8 Acoustics;629.5 Marine Sciences
Keywords : Acoustical holography;Underwater acoustics;Sonar images;Image processing;Optical visibility;Holograms;Sonars
Abstract : The paper describes the basic technique of acoustical holography. Requirements for recording the acoustical hologram are discussed with its ability for underwater imaging in view. Some practical systems for short-range and medium-range imaging are described. The advantages of acoustical holography over optical imaging, acoustical imaging and sonars are outlined.