Passive Millimeter-wave Imaging for Weapons and Contraband Detection

摘要

As a result of its relatively short wavelength coupled with relatively high penetration of many materials, millimeter-wave imaging provides a owerful tool for the detection of concealed articles. By using a passive approach such as that implemented here, it is possibel to image (detect) concealed weapons and articles or look through certain types of walls, all without generating any form of rdiation that might raise health concerns. In this paper we show the results of two years of upgrades to our imager that have resulted in true 30 Hz imaging and 5 Kelvin instantaneous thermal sensitivity. High resolution ground based video and image data taken at distancesfrom 12 to over 66 feet together with airborne flight test data will be presented as representing state-of-the-art in apssive milimeter-wave imaging.