Imaging through optically opaque barriers with microwaves and millimeter waves

Abstract
A rudimentary, inexpensive microwave and millimeter wave imaging system has been developed for imaging scenes viewed through optically opaque barriers. We have quantified the attenuation of microwave-band and millimeter-band radiation in materials commonly used in construction. We have also investigated, on a fundamental level, the imaging of the content of a briefcase using this simple scanner.

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