Airport Passenger Screening Using Millimeter Wave Machines Compliance with Guidelines (2017) / Chapter Skim
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Appendix D: Millimeter Wave Advanced Imaging Technology: Passive Systems
Appendix D: Millimeter Wave Advanced Imaging Technology: Passive Systems
Pages 158-161
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From page 158... ...
At lower temperatures, the maximum emission shifts into the millimeter and submillimeter range. While passive millimeter wave imaging systems have been under investigation and development for over a decade, no such system has yet achieved widespread adoption in the United States.1 A new approach of the terahertz sensing for the detection of concealed objects is represented by the passive detection implemented in the ThruVision TS4.C and ThruVision TS5.C machines from Digital Barriers, LLC.
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From page 159... ...
ThruVision TS5.C detects large objects at distances between 6 and 15 m. Both machines use 0.25 THz sensing arrays with output for closed-circuit television color camera with the frame rate of 6 Hz.2 Figure D.3 shows the installation schematic, and Figure D.4 shows an example.
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From page 160... ...
FIGURE D.2 Wien's law and the maximum emission wavelength in the millimeter and submillimeter ranges in the shaded temperature region. FIGURE D.3 Schematic of ThruVision TS4.C installation.
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From page 161... ...
Appendix D 161 FIGURE D.4 An example of the ThruVision TS4.C scan. SOURCE: Digital Barriers.
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