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Proceedings Paper

Speckle Reduction Achievable By Spatial Compounding And Frequency Compounding: Experimental Results And Implications For Target Detectability
Author(s): G. E. Trahey; J. W. Allison; S. W. Smith; O. T. von Ramm
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Paper Abstract

The degree of speckle reduction achievable by spatial and frequency compounding is a function of the rates of speckle pattern change induced by varying the imaging system's illumination angle and acoustic frequency, respectively. We have measured these rates under a variety of conditions and derived a method of maximizing speckle reduction using the average of partially correlated speckle patterns. Our experimental results agree well with theoretical predictions of these phenomena and indicate that, under limited conditions, improved target detection is possible using spatial compounding. Frequency compounding appears to be counterproductive in improving target detectability.

Paper Details

Date Published: 10 September 1987
PDF: 8 pages
Proc. SPIE 0768, Pattern Recognition and Acoustical Imaging, (10 September 1987); doi: 10.1117/12.940266
Show Author Affiliations
G. E. Trahey, Duke University (United States)
J. W. Allison, Duke University (United States)
S. W. Smith, Food and Drug Administration (United States)
O. T. von Ramm, Duke University (United States)

Published in SPIE Proceedings Vol. 0768:
Pattern Recognition and Acoustical Imaging
Leonard A. Ferrari, Editor(s)

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