1 May 2007 High-resolution passive millimeter-wave security screening using few amplifiers
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Abstract
Trex Enterprises has applied the frequency scanned antenna architecture found in the ST-150 stand-off imager to closein personnel screening devices, including a full-body imager and a handheld scanning imager. These devices present the user with an image with 3mm square pixels and 10-18 mm spatial resolution using few amplifiers and a low level of mechanical complexity. The frequency scanned architecture permits the real-time imaging of a linear array of 64 pixels with a single amplifier module. The linear imager or imagers are slowly mechanically scanned to provide a twodimensional image. The imagers were used to capture images of concealed threat items at thermal resolutions from 1 K to 0.2 K, indoor and outdoors. Image quality is generally superior to that of stand-off detectors, detecting items as small as 10 mm.
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Christopher A. Martin, Christopher A. Martin, John A. Lovberg, John A. Lovberg, William H. Dean, William H. Dean, Eahab Ibrahim, Eahab Ibrahim, } "High-resolution passive millimeter-wave security screening using few amplifiers", Proc. SPIE 6548, Passive Millimeter-Wave Imaging Technology X, 654806 (1 May 2007); doi: 10.1117/12.718950; https://doi.org/10.1117/12.718950
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