Acoustic imaging of objects buried in soil |
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Authors: | Frazier C H Cadalli N Munson D C O'Brien W D |
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Affiliation: | Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 61801, USA. hillsley@brl.uiuc.edu |
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Abstract: | In this study, we demonstrate an acoustic system for high-resolution imaging of objects buried in soil. Our goal is to image cultural artifacts in order to assess in a rapid manner the historical significance of a potential construction site. We describe the imaging system and present preliminary images produced from data collected from a soil phantom. A mathematical model and associated computer software are developed in order to simulate the signals acquired by the system. We have built the imaging system, which incorporates a single element source transducer and a receiver array. The source and receiver array are moved together along a linear path to collect data. Using this system, we have obtained B-mode images of several targets by using delay-and-sum beamforming, and we have also applied synthetic aperture theory to this problem. |
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