Direct estimation of aberrating delays in pulse-echo imaging systems.

  title={Direct estimation of aberrating delays in pulse-echo imaging systems.},
  author={Dr. Stephen Rachlin},
  journal={The Journal of the Acoustical Society of America},
  volume={88 1},
Nearfield fluctuations in wave propagation velocity and system timing errors are among the sources of focusing aberrations in pulse-echo imaging systems. For situations in which the source of these errors can be modeled by a stationary phase aberrator placed in front of the transmitter and receiver aperture, appropriate electronic delays might be applied to the signals associated with each array element in order to restore the system to focus. A method is described and evaluated for estimating… CONTINUE READING
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