A commercial imaging FTIR spectrometer that operates between 850 and 1300 cm-1 was used to passively image a galvanized steel plate stained with a residue of the explosive tetryl (2,4,6,N-tetranitro-N-methylaniline). The tetryl was coated onto the plate in a 30 cm diameter spot with an areal dosage of 90 ug tetryl/cm2. The stain on the plate was easily detected at standoff distances of 14 and 31 m by examining the hyperspectral data cubes using maximum autocorrelation factors and a slight modification to a generalized least squares target detection algorithm. End-member extraction showed good comparison in a few key bands between the target end-member and laboratory reflectance spectra; however, significant differences were also observed
Revised: April 17, 2012 |
Published: June 15, 2010
Citation
Gallagher N.B., J.F. Kelly, and T.A. Blake. 2010.Passive Infrared Hyperspectral Imaging for Standoff Detection of Tetryl Explosive Residue on a Steel Surface. In Proceedings of the 2nd Workshop on
Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), June 14-16, 2010, Reykjavik, Iceland. Piscataway, New Jersey:IEEE. PNNL-SA-70717.doi:10.1109/WHISPERS.2010.5594839