Doppler Wavefront Distortion Effects Due to Continuous Dynamic Array Focusing

  • James T. Walker
Part of the Acoustical Imaging book series (ACIM, volume 8)


Use of continuous dynamic focusing in an ultrasonic linear phased array system can cause doppler distortion of the received signals. This distortion results from variation of the effective beamformer delay during signal reception, and can affect both the received signal frequency and synthesized beamwidth.


Target Range Voltage Control Oscillator Phase Front Array Axis Array Center 
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  1. [1]
    O.T. von Ramm, “A Real-Time Digitally Controlled Ultrasound Imaging System,” Duke University, 1973.Google Scholar
  2. [2]
    J.T. Walker and J.D. Meindl, “A Digitally Controlled CCD Dynamically Focused Phased Array,” Proc. IEEE Ultrasonic Symp., 1975, pp. 80–83.Google Scholar
  3. [3]
    J.T. Walker, “A CCD Phased Array Ultrasonic Imaging System,” Stanford University, 1977.Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • James T. Walker
    • 1
  1. 1.Center for Integrated Electronics in MedicineStanford UniversityStanfordUSA

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