29 July 2002 Concealed weapons detection using an uncooled millimeter-wave microbolometer system
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Abstract
We describe the status of, and present the first imagery obtained using an active uncooled mm-wave microbolometer- based imaging system. The microbolometers consist of 2 micrometers X 6 micrometers X .02 micrometers Nb films, coupled to the incident field by annular slot antennas. The system frequency is centered at 94 GHz. Imagery has been obtained using a mechanically scanned primary mirror and single-pixel bolometer, as a prototype for a 120-element focal-plane array still under development. With our most recent version of the optical system, high quality images, with clear detail on a spatial scale of 1 cm, have been obtained with acquisition times of 70 s and a target range of 1.3 m.
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Erich N. Grossman, Erich N. Grossman, A K Bhupathiraju, A K Bhupathiraju, Aaron J. Miller, Aaron J. Miller, Carl D. Reintsema, Carl D. Reintsema, } "Concealed weapons detection using an uncooled millimeter-wave microbolometer system", Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); doi: 10.1117/12.477461; https://doi.org/10.1117/12.477461
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