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Terahertz standoff identification under real world conditions

: Herrmann, M.; Wiegand, C.; Wohnsiedler, S.; Jonuscheit, J.; Beigang, R.


Institute of Electrical and Electronics Engineers -IEEE-:
International Conference on Electromagnetics in Advanced Applications, ICEAA 2009. Vol.1 : Torino, Italy, 14 - 18 September 2009
New York, NY: IEEE, 2009
ISBN: 978-1-4244-3385-8
ISBN: 978-1-4244-3386-5
International Conference on Electromagnetics in Advanced Applications (ICEAA) <11, 2009, Torino>
Fraunhofer IPM ()

Many chemicals, including hazardous substances, can be distinguished based on their spectral fingerprints in the terahertz range under laboratory conditions. In a real-world standoff environment, additional factors such as water vapor absorption in humid air, clothes and packaging materials, and the surface properties of the particular sample make this task more difficult. We have performed measurements and simulations in order to quantify these influences and improve on the limits of detection.