Properties of acoustical speckle in the presence of phase aberration. Part II: Correlation lengths.

@article{Smith1988PropertiesOA,
  title={Properties of acoustical speckle in the presence of phase aberration. Part II: Correlation lengths.},
  author={Savannah Willson Smith and Gregg E. Trahey and Susan Molloy Hubbard and Robert F. Wagner},
  journal={Ultrasonic imaging},
  year={1988},
  volume={10 1},
  pages={
          29-51
        }
}
In recent years, analysis of the second order statistics of ultrasound speckle has led to accurate prediction and measurements of the average speckle size in the transducer focal zone. In this paper, that work has been extended to the average speckle size as determined by the normalized autocovariance in the presence of transducer phase aberrations. In general, a phase aberration causes a narrowing of the main lobe of the normalized autocovariance in the lateral direction. However, the lateral… CONTINUE READING
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