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Proceedings Paper

Detection of extended targets using multispectral infrared
Author(s): Edwin M. Winter; Michael J. Schlangen
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Paper Abstract

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.

Paper Details

Date Published: 22 October 1993
PDF: 8 pages
Proc. SPIE 1954, Signal and Data Processing of Small Targets 1993, (22 October 1993); doi: 10.1117/12.157804
Show Author Affiliations
Edwin M. Winter, Technical Research Associates, Inc. (United States)
Michael J. Schlangen, Technical Research Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 1954:
Signal and Data Processing of Small Targets 1993
Oliver E. Drummond, Editor(s)

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