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4 October 1999 SPIRIT: a hyperspectral infrared imager
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The SPIRIT system is a spectrally agile IR imaging airborne camera, with the capability to select any of the multiple filters on a frame by frame basis. The implemented solution employs advanced, but proven, technology to meet the objectives, and achieved good spatial and thermal performance in all modes. Sophisticated electronic design has results in a flexible unit, which can respond to the changing requirements of the user. Initial SPIRIT flight trials were undertaken in summer 1998 with more scheduled to continue through 1999. The sensor was installed on to DERA's TIARA research platform, a modified Tornado F2. The flight trials to date have been conducted over a variety of scenarios, collecting spectral data in up to 12 bands, of other aircraft, tanks, and fixed targets. Further ground- based trials, with the sensor mounted on a pan and tilt tracking platform, have been performed on characterized targets and against further air targets. Data from these initial trials are currently being processed to assess whether sufficient spectral information is available to discriminate between target types at militarily significant ranges. Sample hyperspectral imagery form SPIRIT and some results are presented.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen C. Evans, John Hargreaves, Paul H. Evans, Peter N. Randall, and Mark Bernhardt "SPIRIT: a hyperspectral infrared imager", Proc. SPIE 3809, Signal and Data Processing of Small Targets 1999, (4 October 1999);

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