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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 31 — Nov. 1, 2008
  • pp: G112–G121

Multivariate analysis of standoff laser-induced breakdown spectroscopy spectra for classification of explosive-containing residues

Frank C. De Lucia, Jr., Jennifer L. Gottfried, Chase A. Munson, and Andrzej W. Miziolek  »View Author Affiliations


Applied Optics, Vol. 47, Issue 31, pp. G112-G121 (2008)
http://dx.doi.org/10.1364/AO.47.00G112


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Abstract

A technique being evaluated for standoff explosives detection is laser-induced breakdown spectroscopy (LIBS). LIBS is a real-time sensor technology that uses components that can be configured into a ruggedized standoff instrument. The U.S. Army Research Laboratory has been coupling standoff LIBS spectra with chemometrics for several years now in order to discriminate between explosives and nonexplosives. We have investigated the use of partial least squares discriminant analysis (PLS-DA) for explosives detection. We have extended our study of PLS-DA to more complex sample types, including binary mixtures, different types of explosives, and samples not included in the model. We demonstrate the importance of building the PLS-DA model by iteratively testing it against sample test sets. Independent test sets are used to test the robustness of the final model.

© 2008 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(140.3440) Lasers and laser optics : Laser-induced breakdown
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

History
Original Manuscript: March 13, 2008
Revised Manuscript: August 15, 2008
Manuscript Accepted: August 18, 2008
Published: September 16, 2008

Citation
Frank C. De Lucia, Jr., Jennifer L. Gottfried, Chase A. Munson, and Andrzej W. Miziolek, "Multivariate analysis of standoff laser-induced breakdown spectroscopy spectra for classification of explosive-containing residues," Appl. Opt. 47, G112-G121 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-31-G112

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