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.
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References
J. W. Goodman,1968, “Introduction to Fourier Optics,” Mc Graw Hill, New York
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J. P. Power, Computer Simulation of Linear Acoustic Diffraction, Acoustical Holography, Vol.7, Plenum Press, New York, (1976), 193
C. Schueler, et al, Spatial Replication in Back-Propagated Acoustic Holograms, Proc. IEEE, 69(1981), No.12, 1580
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© 1987 Plenum Press, New York
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Xia, X., Zhang, D. (1987). Relation between Spatial Frequency Sampling Window and Lateral Resolution in Backward Propagation Acoustical Imaging. In: Jones, H.W. (eds) Proceedings of the Fifteenth International Symposium, July 14–6, 1986. Acoustical Imaging, vol 15. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5320-1_41
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DOI: https://doi.org/10.1007/978-1-4684-5320-1_41
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-5322-5
Online ISBN: 978-1-4684-5320-1
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