Real time analysis of hyperspectral data sets using NRL'S ORASIS algorithm

The Covered Lantern project was initiated by the Central MASINT Technology Coordination Office (CMTCO) to demonstrate the tactical use of hyperspectral imagery with real time processing capability. We report on the design and use of the HYCORDER system developed for Covered Lantern that was tested in June 1995. The HYCORDER system consisted of an imaging spectrometer (less than or equal to 1.5 meter GSD) flying in a Pioneer Uncrewed Aeronautical Vehicle (UAV) and a ground based real time analysis and visualization system. The camera was intensified allowing dawn to dusk operation. The spectral information was downlinked to the analysis system as standard analog video. The analysis system was constructed from 17 Texas Instrument C44 DSPs controlled by a 200 MHz Pentium Pro PC. A real time, parallel version of NRL's Optical Real-time Adaptive Spectral Identification System (ORASIS) algorithm was developed for this system. The system was capable of running continuously, allowing for broad area coverage. The algorithm was adaptive, accommodating changing lighting conditions and terrain. The general architecture of the algorithm will be discussed as well as results from the test.