An aviation security (AVSEC) screening demonstrator for the detection of non-metallic threats at 28-33 GHz

Neil A. Salmon; Nick Bowring; Simon Hutchinson; Matthew Southgate; Dean O'Reilly

doi:10.1117/12.2030795

18 October 2013 An aviation security (AVSEC) screening demonstrator for the detection of non-metallic threats at 28-33 GHz

Neil A. Salmon, Nick Bowring, Simon Hutchinson, Matthew Southgate, Dean O'Reilly

Author Affiliations +

Proceedings Volume 8900, Millimetre Wave and Terahertz Sensors and Technology VI; 890004 (2013) https://doi.org/10.1117/12.2030795
Event: SPIE Security + Defence, 2013, Dresden, Germany

Abstract

The unique selling proposition of millimetre wave technology for security screening is that it provides a stand-off or portal scenario sensing capability for non-metallic threats. The capabilities to detect some non-metallic threats are investigated in this paper, whilst recommissioning the AVSEC portal screening system at the Manchester Metropolitan University. The AVSEC system is a large aperture (1.6 m) portal screening imager which uses spatially incoherent illumination at 28-33 GHz from mode scrambling cavities to illuminate the subject. The imaging capability is critically analysed in terms of this illumination. A novel technique for the measurement of reflectance, refractive index and extinction coefficient is investigated and this then use to characterise the signatures of nitromethane, hexane, methanol, bees wax and baking flour. Millimetre wave images are shown how these liquids in polycarbonate bottles and the other materials appear against the human body.

Citation Download Citation

Neil A. Salmon, Nick Bowring, Simon Hutchinson, Matthew Southgate, and Dean O'Reilly "An aviation security (AVSEC) screening demonstrator for the detection of non-metallic threats at 28-33 GHz", Proc. SPIE 8900, Millimetre Wave and Terahertz Sensors and Technology VI, 890004 (18 October 2013); https://doi.org/10.1117/12.2030795

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