A passive millimeter-wave imaging system for concealed weapons and explosives detection

被引：16
|
作者：
Kolinko, VG [1 ]
Lin, SH [1 ]
Shek, A [1 ]
Manning, W [1 ]
Martin, C [1 ]
Hall, M [1 ]
Kirsten, O [1 ]
Moore, J [1 ]
Wikner, DA [1 ]
机构：
[1] Trex Enterprises Corp, San Diego, CA 92121 USA
来源：
Optics and Photonics in Global Homeland Security | 2005年 / 5781卷
关键词：
passive millimeter-wave imaging; thermal imaging; concealed object detection;
D O I：
10.1117/12.606661
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper describes a passive millimeter-wave image scanner that leverages technologies previously developed for a video-rate passive millimeter-wave camera (PMC) [1, 2]. The imager has a prime focus elliptical frequency scanned antenna operating in the 75-93 GHz millimeter-wave band, a low noise receiver and a vertical beam former that allows the instantaneous capture of 128 pixel (vertical) column images in 1/30(th) of a second, with 2-3 K sensitivity. Two dimensional images are created by mechanically rotating the antenna, which produces a 128x60 raster image in 2 seconds. By integrating (averaging) images over a longer time period, we have demonstrated a sub-degree temperature resolution. This sensor has proven itself as a low cost tool for studying the potential of W-band passive imaging for various applications.
引用
收藏
页码：85 / 92
页数：8
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