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22 October 1993 Detection of extended targets using multispectral infrared
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The DARPA Multi-Spectral Infrared Camera (MUSIC) sensor system was deployed to Australia in July 1991. A series of measurements on targets and backgrounds were performed over a six week period. Two experiments were performed to investigate the use of multi- spectral techniques to enhance extended targets. The first of these was an experiment to detect ship wakes in the tropical ocean. For this experiment data was taken along a ship wake in both an MWIR band and an LWIR band. The thermal structure of the ocean surface showed a high level of spectral correlation even at the 10 millikelvin sensitivity level of the data. Several ship wakes were detected by processing the data spectrally to remove the background. A second extended target experiment was conducted to detect chemical vapor plumes over a cluttered terrain background. In this experiment, two neighboring infrared bands were chosen, one centered on a chemical absorption band and the second placed away from it. The background clutter proved to be highly correlated between these bands allowing its removal using multi- spectral processing. The enhanced chemical plume was then detected. Results from the processing of the data from both of these experiments will be presented along with a description of the algorithm used.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edwin M. Winter and Michael J. Schlangen "Detection of extended targets using multispectral infrared", Proc. SPIE 1954, Signal and Data Processing of Small Targets 1993, (22 October 1993);

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