Accession Number:
ADA522281
Title:
Progress in LIBS for Land Mine Detection
Descriptive Note:
Final rept. Jul 2008-Nov 2009
Corporate Author:
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
Personal Author(s):
Report Date:
2010-04-01
Pagination or Media Count:
24.0
Abstract:
The ability to interrogate objects buried in soil and ascertain their chemical composition in-situ would be an important capability enhancement for both military and humanitarian demining. Laser-induced breakdown spectroscopy LIBS is a simple spark spectrochemical technique using a pulsed laser. Recent developments in broadband and man-portable LIBS provide the capability for the real-time detection of all elements at very high sensitivity in any target material. This technological advance offers a unique potential for the development of a rugged and reliable man-portable or robot-deployable chemical sensor that would be capable of both in-situ point probing and chemical sensing for land mine detection. In this study, broadband LIBS spectra were acquired under laboratory conditions for more than a dozen different types of antipersonnel and antitank land mine casings from four countries. A set of antitank land mine simulants was also acquired. Subsequently, a statistical classification technique partial least-squares discriminant analysis was used to discriminate land mine casings from the simulants and to assign unknown spectra to a mine type based upon a library classification approach. Overall, a correct classification success of 99.0 was achieved, with a misclassification rate of only 1.8.
Descriptors:
Subject Categories:
- Lasers and Masers
- Land Mine Warfare
- Miscellaneous Detection and Detectors
- Ammunition and Explosives
- Atomic and Molecular Physics and Spectroscopy