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The Underwater Acoustic Camera

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A brief account is given of the development between 1949 and 1954 of a system for giving moving acoustic “pictures” of targets in muddy water. The principle of operation is that the acoustic image formed by a concave spherical mirror is converted to a television picture.

In the course of the work, the attenuation of muddy seawater was measured in the frequency range 1 Mc/s to 3 Mc/s and the underwater acoustic image was explored initially by a mechanically driven probe. Special types of underwater transducers were also designed.

Details of the ultrasonic/electronic image converter tube have already been published.

When this became available, (in 1953) a complete experimental system was built.

Various targets were examined with this equipment; some were self-emitters of ultrasonic waves, others were scatterers, both specular and rough. In this way, the overall resolution, the aberrations of the mirror, the appearance of a target and the maximum range of detection were determined.
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Document Type: Research Article

Publication date: January 1, 1966

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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