Complex On-Axis Holograms and Reconstruction without Conjugate Images

  • P. N. Keating
  • R. F. Koppelmann
  • R. K. Mueller
  • R. F. Steinberg

Abstract

Holograms representing both real and imaginary parts have been obtained with an on-axis reference from an experimental acoustical underwater viewing system and digitally reconstructed to yield only the real image. The absence of both the conjugate imagery and dc and autoconvolution terms allows maximum efficiency in utilizing the relatively limited amount of sampling often available for microwave and acoustic radiation and reduces conjugate image noise. Improved imagery of underwater targets which has been obtained in this way with relatively light sampling (20 × 20) is presented.

Keywords

Microwave Convolution Sine Tempo 

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References

  1. 1.
    J. Upatnieks and E. M. Leith, J. Opt. Soc. Am., 54, 1295 (1964) .ADSCrossRefGoogle Scholar
  2. 2.
    R. K. Mueller, Proc. IEEE, 59, 1319 (1971).CrossRefGoogle Scholar
  3. 3.
    H. R. Farrah, E. Marom, and R. K. Mueller, Acoustical Holography, Vol. 2, p. 173 (Springer Science+Business Media New York, 1970);CrossRefGoogle Scholar
  4. 3a.
    E. Marom, R. K. Mueller, R. F. Koppelmann, and G. Zilinskas, Acoustical Holography, Vol. 3, p. 191 (Springer Science+Business Media New York, 1971).CrossRefGoogle Scholar
  5. 4.
    J. W. Cooley and J. W. Tukey, Math Comput., 19, 297 (1965) .MathSciNetMATHCrossRefGoogle Scholar
  6. 5.
    G. G. Goetz, R. F., Koppelmann, and R. K. Mueller, Proc. Electro-Optic Systems Design Conference, New York (September 1971) .Google Scholar
  7. 6.
    R. K. Mueller, R. R. Gupta, and P. N. Keating, J. Appl. Phys., 43, 457 (1972);ADSCrossRefGoogle Scholar
  8. 6a.
    P. N. Keating, R. R. Gupta, and R. K. Mueller, J. Appl. Phys., 43, 1198 (1972).ADSCrossRefGoogle Scholar
  9. 7.
    P. N. Keating, R. F. Koppelmann, R. K. Mueller, R. F. Steinberg, and G. Zilinskas, to be published.Google Scholar
  10. 8.
    G. G. Goetz, Appl. Phys. Lett., 17, 63 (1970).ADSCrossRefGoogle Scholar
  11. 9.
    R. K. Mueller, to be published in Critical Reviews. Google Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • P. N. Keating
    • 1
  • R. F. Koppelmann
    • 1
  • R. K. Mueller
    • 1
  • R. F. Steinberg
    • 1
  1. 1.Bendix Research LaboratoriesSouthfieldUSA

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