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Probabilistic method for phased array detection in scattering media

[+] Author Affiliations
Stephen P. Morgan, Michael G. Somekh

University of Nottingham, Department of Electrical and Electronic Engineering, University Park, Nottingham, NG7?2RD, United Kingdom

Keith I. Hopcraft

University of Nottingham, Department of Theoretical Mechanics, University Park, Nottingham, NG7?2RD, United Kingdom

Opt. Eng. 37(5), 1618-1626 (May 01, 1998). doi:10.1117/1.601674
History: Received Aug. 20, 1997; Revised Nov. 20, 1997; Accepted Nov. 28, 1997
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Abstract

It has been suggested that phased-array detection is a highly sensitive method of detecting and locating an inhomogeneity embedded within a scattering medium, e.g., a tumor embedded in breast tissue. No consideration has so far been given to the effects of noise within the system leading to detection errors. A probabilistic approach is used to find the optimum detector threshold and detection criteria. The technique is demonstrated using experimental data obtained from a novel phased-array system designed to eliminate noise due to amplitude fluctuations between the two sources. A brief comparison with single-beam frequency detection using the probabilistic method is also made. The technique has applications in optimizing the detection of signals due to inhomogeneities in the presence of a noisy background. © 1998 Society of Photo-Optical Instrumentation Engineers.

© 1998 Society of Photo-Optical Instrumentation Engineers

Citation

Stephen P. Morgan ; Michael G. Somekh and Keith I. Hopcraft
"Probabilistic method for phased array detection in scattering media", Opt. Eng. 37(5), 1618-1626 (May 01, 1998). ; http://dx.doi.org/10.1117/1.601674


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