Detection of explosives by Terahertz synthetic aperture imaging-focusing and spectral classification

Alexander Sinyukov, Ivan Zorych, Zoi-Heleni Michalopoulou, Dale Gary, Robert Barat, John Federici

Research output: Contribution to journalShort surveypeer-review

12 Scopus citations

Abstract

In the adaptation of Terahertz (THz) synthetic aperture imaging to stand-off screening of concealed weapons and explosives, the incoming THz wavefronts exhibit significant curvature that must be considered in the image reconstruction. Consequently, the imaging array must be focused at a specific distance to correct for the wavefront curvature. In addition to the focusing correction, detection of explosives requires spectral analysis of the reconstructed THz image. Kohonen self-organizing maps are shown to be promising tools for differentiating the spectral signature of C4 explosive from the reflection spectra of metal and semi-transparent barrier materials. To cite this article: A. Sinyukov et al., C. R. Physique 9 (2008).

Original languageEnglish (US)
Pages (from-to)248-261
Number of pages14
JournalComptes Rendus Physique
Volume9
Issue number2
DOIs
StatePublished - Mar 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Kohonen maps
  • Synthetic aperture
  • Terahertz

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