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Relation between Spatial Frequency Sampling Window and Lateral Resolution in Backward Propagation Acoustical Imaging

  • Xianhua Xia
  • Dejun Zhang
Part of the Acoustical Imaging book series (ACIM, volume 15)

Abstract

An acoustical imaging could be numerically reconstructed by several methods, one of which is Backward Propagation method. This method has many advantages especially it could be used in nearer distance where it is no longer in the region of Fresnel diffraction. Using traditional backward propagation method, the lateral resolution of the imaging system would be constrained by spatial sampling interval when the imaging distance is very short. This problem is discussed and the solution worked out using the method of data augmenting in spatial frequency domain. The details of the method and the results of computer simulant experiments are given in the paper.

Keywords

Point Spread Function Lateral Resolution Acoustical Imaging Fresnel Diffraction Spatial Frequency Domain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    J. W. Goodman,1968, “Introduction to Fourier Optics,” Mc Graw Hill, New YorkGoogle Scholar
  2. [2]
    E. Lalor, Inverse Wave Propagation, J. Math. Phys., 9(1968), 2001CrossRefGoogle Scholar
  3. [3]
    J. P. Power, Computer Simulation of Linear Acoustic Diffraction, Acoustical Holography, Vol.7, Plenum Press, New York, (1976), 193Google Scholar
  4. [4]
    C. Schueler, et al, Spatial Replication in Back-Propagated Acoustic Holograms, Proc. IEEE, 69(1981), No.12, 1580CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Xianhua Xia
    • 1
  • Dejun Zhang
    • 1
  1. 1.Wuhan Institute of PhysicsAcademia SinicaWuhan, HubeiPeople’s Republic of China

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