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.
J. Acoust. Soc. Am., vol. 108, pp. 147-156, July 2000.