Discrimination and identification of RDX/PETN explosives by chemometrics applied to terahertz time-domain spectral imaging

J. Bou-Sleiman; J.-B. Perraud; B. Bousquet; J.-P. Guillet; N. Palka; P. Mounaix

doi:10.1117/12.2197442

21 October 2015 Discrimination and identification of RDX/PETN explosives by chemometrics applied to terahertz time-domain spectral imaging

J. Bou-Sleiman, J.-B. Perraud, B. Bousquet, J.-P. Guillet, N. Palka, P. Mounaix

Author Affiliations +

Proceedings Volume 9651, Millimetre Wave and Terahertz Sensors and Technology VIII; 965109 (2015) https://doi.org/10.1117/12.2197442
Event: SPIE Security + Defence, 2015, Toulouse, France

Abstract

Detection of explosives has always been a priority for homeland security. Jointly, terahertz spectroscopy and imaging are emerging and promising candidates as contactless and safe systems. In this work, we treated data resulting from hyperspectral imaging obtained by THz-time domain spectroscopy, with chemometric tools. We found efficient identification and sorting of targeted explosives in the case of pure and mixture samples. In this aim, we applied to images Principal Component Analysis (PCA) to discriminate between RDX, PETN and mixtures of the two materials, using the absorbance as the key-parameter. Then we applied Partial Least Squares-Discriminant Analysis (PLS-DA) to each pixel of the hyperspectral images to sort the explosives into different classes. The results clearly show successful identification and categorization of the explosives under study.

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J. Bou-Sleiman, J.-B. Perraud, B. Bousquet, J.-P. Guillet, N. Palka, and P. Mounaix "Discrimination and identification of RDX/PETN explosives by chemometrics applied to terahertz time-domain spectral imaging", Proc. SPIE 9651, Millimetre Wave and Terahertz Sensors and Technology VIII, 965109 (21 October 2015); https://doi.org/10.1117/12.2197442

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