Advertisement

Estimation of ECHO Scattered from Strongly Scattering Medium

  • Mitsuhiro Ueda
Part of the Acoustical Imaging book series (ACIM, volume 12)

Abstract

The estimation of echo signal has been succeeded only for plane and spherical incident waves, but echoes are usually reflected in near field of an ultrasonic transducer in most ultrasonic pulse echo systems. Lately we have proposed the new estimation algorithm for echo signal which is based on a discrete expression of the medium. This algorithm can be applied for any incident waves if the medium can be assumed as weakly scattering one. In this paper it is modified to the case of strongly scattering medium and then echoes reflected from a wire of nylon are calculated. The comparison with experiments shows good agreement.

Keywords

Impulse Response Incident Wave Inverse Fourier Transform Acoustic Impedance Ultrasonic Pulse 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J.P. Jones, “Recent Advances in Ultrasound in Biomedicine” Research Studies Press, Oregon, vol.l, p.131 (1977).Google Scholar
  2. 2.
    M. Ueda and Y. Igarashi, Oyo Buturi, 49:1049 (1980)(in Japanese).Google Scholar
  3. 3.
    J.E. Barger, IEEE Trans. Sonics &Ultrason., SU-28:3ll (1981).Google Scholar
  4. 4.
    A. Freedman, Acustica, 12:61 (1963).Google Scholar
  5. 5.
    D. M. Johnson, J. Acoust. Soc. Am., 59:1319(1976).ADSCrossRefGoogle Scholar
  6. 6.
    M. Ueda and H. Ichikawa, J. Acoust. Soc. Am. 70:1768 (1981).ADSCrossRefGoogle Scholar
  7. 7.
    P.R. Stepanishen, J. Acoust. Soc. Am., 49:1629 (1971).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Mitsuhiro Ueda
    • 1
  1. 1.Research Laboratory of Precision Machinery and ElectronicsTokyo Institute of Technology ResearchMidori-ku, Yokohama 227Japan

Personalised recommendations