Acoustic Speckle: Theory and Experimental Analysis
- 1 October 1979
- journal article
- research article
- Published by SAGE Publications in Ultrasonic Imaging
- Vol. 1 (4) , 303-324
- https://doi.org/10.1177/016173467900100402
Abstract
A theoretical and experimental study of speckle, as applied to ultrasonic imaging, is presented. The concept of laser speckle is briefly reviewed and is used as a starting point to explain the origin of acoustic speckle. The primary differences between these two phenomena are discussed and are confirmed by experiment. An experimental study of speckle reduction by summation of multiple images is also presented. Several techniques for generating independent speckle patterns for use in image summation schemes are proposed. A phased array, dynamically focused sector imaging system was used in all of the experimental studies reported.Keywords
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