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Experimental Results from an Underwater Acoustical Holographic System

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Acoustical Holography

Abstract

This paper describes the system design, fabrication, and preliminary results obtained from an experimental laboratory model of an underwater holographic system whose operation was previously simulated by computer.1 The model has a linear-array receiver with 100 channels and a cylindrical insonifying transducer. The receiver array and the insonifying transducer scan simultaneously. The holographic information is processed in parallel by 100 distinct electronic channels and is then displayed by a scanning linear array of 100 light-emitting diodes.

The resulting images demonstrate that a properly designed cylindrical insonifying transducer can be used to produce holograms while scanning which are of the same quality as those produced by a stationary transmitter. With this method, no special techniques, i.e. no techniques other than those conventionally used, are required to reconstruct the image.

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References

  1. G. Wade, M. Wollman, and K. Wang, “A Holographic System for Use in the Ocean,” Acoustical Holography Vol. 3, Springer Science+Business Media New York, pp. 225–245 (1971).

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  2. B. P. Hildebrand and K. A. Haines, “Holography by Scanning,” J. Opt. Soc. Am., 59(1):1 (1969).

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  4. B. P. Hildebrand and B. B. Brenden, An Introduction to Acoustical Holography, Springer Science+Business Media New York, pp. 67–96 (1972)

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  5. Ibid., pp. 187–191.

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  6. G. Wade, M. Wollman, and R. Smith, “Acoustic Holographic System for Underwater Search,” Proceeding of the IEEE, 57:2051–2052 (1969).

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  8. D. L. Carson, “Diagnosis and Cure of Erratic Velocity Distributions in Sonar Projector Arrays,” J. Acoustic Soc. Am., 34(9) (1962).

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© 1974 Springer Science+Business Media New York

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Wollman, M., Wade, G. (1974). Experimental Results from an Underwater Acoustical Holographic System. In: Green, P.S. (eds) Acoustical Holography. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0827-1_10

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  • DOI: https://doi.org/10.1007/978-1-4757-0827-1_10

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-0829-5

  • Online ISBN: 978-1-4757-0827-1

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