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Proceedings Paper

Stand-off explosive detection on surfaces using multispectral MIR-imaging
Author(s): Kai Degreif; Sven Rademacher; Petya Dasheva; Frank Fuchs; Stefan Hugger; Frank Schnürer; Wenka Schweikert
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Paper Abstract

We present a system for the stand-off detection of solid explosive traces and precursors on surfaces. The system consists of a widely tunable quantum cascade laser (QCL) and a thermal imaging camera. The external cavity quantum cascade laser (EC-QCL) illuminates the surface of a distant object at different characteristic wavelengths. In synchronisation with the camera a hyperspectral data cube of the backscattered radiation is generated allowing a multivariate analysis of the scene. We demonstrate how multidimensional image processing is used in order to fast and sensitively detect traces of hazardous substances such as trinitrotoluene (TNT) or pentaerythritol tetranitrate (PETN). The recognition algorithm is developed to effectively suppress false alarms. Experiments are performed on real world like surfaces such as standard car paint, synthetic cloth or jeans fabric.

Paper Details

Date Published: 24 January 2011
PDF: 8 pages
Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79450P (24 January 2011); doi: 10.1117/12.874044
Show Author Affiliations
Kai Degreif, Fraunhofer Institute for Physical Measurement Techniques (Germany)
Sven Rademacher, Fraunhofer Institute for Physical Measurement Techniques (Germany)
Petya Dasheva, Fraunhofer Institute for Physical Measurement Techniques (Germany)
Frank Fuchs, Fraunhofer Institute for Applied Solid State Physics (Germany)
Stefan Hugger, Fraunhofer Institute for Applied Solid State Physics (Germany)
Frank Schnürer, Fraunhofer Institute for Chemical Technology (Germany)
Wenka Schweikert, Fraunhofer Institute for Chemical Technology (Germany)


Published in SPIE Proceedings Vol. 7945:
Quantum Sensing and Nanophotonic Devices VIII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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