Submillimetre wave imaging for security; a decade of development

Main list: Physics and Astronomy Colloquia

Abstract

Dr Duncan Robertson
University of St Andrews
COLLOQUIUM
2nd March 2018 Physics Lecture Theatre C, 10 am
Dr Duncan A. Robertson Millimetre Wave & EPR Group, School of Physics & Astronomy , University of St Andrews
Submillimetre wave imaging for security; a decade of development The ability to detect person -borne concealed threats is an ongoing and pressing requirement in many scenarios such as border crossings, airports and military checkpoints. Submillimetre wave imaging is a promising modality for such future security screening applications as it offer s the ability to see through clothing with high spatial resolution using systems of a practical size . It is possibly the only solution to concealed object detection at stand -off distances of many to tens of metres where diffraction limited resolu tion is achievable with a reasonably sized antenna. Passive imagers detect radiometric brightness temperature which reveals concealed objects through temperature differences caused by differences in physical temperature and/or emissivity. Active imagers us e radar measurements to make 3D maps plus reflectivity and polarisation images of the subject which can be used to distinguish concealed objects. It is the latter approach which is the subject of this colloquium. Since the first demonstration of concealed object detection using submillimetre wave imaging radar by JPL in 2007 many groups including ours have sought to develop a practical solution. The goal is to image a 3D volume big enough to encompass a person with ~cm 3 voxel resolution to reveal small obje cts and do so at a frame rate of at least 10 Hz to cope with subject movement. I will review the work done in the Millimetre Wave & EPR Group to tackle this challenge under projects funded by the MoD and UK Home Office for stand -off detection, and under th e EU FP7 CONSORTIS project for next generation, walk -by aviation security. JPL 2007 600 GH z radar 4 m range , 6 minutes St Andrews 201 7 340 GHz CONSORTIS radar 2.4 m range, 10 Hz F.R. St Andrews 2010 340 GHz IRAD radar 100 m range , 1 Hz frame rate
Download PDF

  • Venue

    Physics Theatre C

  • Date

    March 2, 2018

  • Time

    From: 10h00 To: 11h00

  • Sponsor

    University of St Andrews
    The oldest university in Scotland, with international renown for both research and education of undergraduates and postgraduates.

Go Back

Viewed: 97 time(s)