Translator Disclaimer
15 October 2004 Spectral optimization studies and simulations for two-, three-, and four-band staring LWIR sensors in missile defense scenarios
Author Affiliations +
Prototype 2-, 3-, and 4- band long wave infrared (LWIR) focal plane arrays (FPA) for missile defense applications have recently been constructed to enhance target discrimination in space-based interceptor seekers. To address issues related to target identification such as algorithm choice and band number, this study created synthesized, optimized (using a genetic algorithm) image cubes (8- 12 mm) of targets and backgrounds compatible with expected mid-course defense scenarios and current multicolor sensors. Each candidate band was weighted using an interacting band edge model for 2-, 3- or 4- band sensors, consistent with a DRS multi-color HgCdTe LWIR FPA. Whitening the binned cubes and assigning red, green, blue colors directly to the whitened data set can prominently display and identify targets. Modified target signatures applied in matched filters searches and spectral angle maps autonomously searched for targets in the synthetic binned image cubes. Target discrimination diminished with decreasing target temperature and/or increasing distance between sensor and targets due to mixing subpixel target spectra with noise background. Spectral angle maps identified target temperatures and materials substantively better than the matched filter in this particular study. Target material and temperature identification improved by increasing number of bands, with greatest improvement for 3 bands relative to 2 bands. Extending detector sensitivity to 6-14 mm failed to improve target identification. This is the first study to systematically examine target identification in synthetic images cubes, consistent with missile defense scenarios and current multi-sensor technology.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rulon R. Mayer, Dean Scribner, Erin Fleet, James Waterman, Jonathon Schuler, and Mel Kruer "Spectral optimization studies and simulations for two-, three-, and four-band staring LWIR sensors in missile defense scenarios", Proc. SPIE 5546, Imaging Spectrometry X, (15 October 2004);


A general spectral target signature transform
Proceedings of SPIE (August 12 2004)
An Application For Z-Plane Techndiogy
Proceedings of SPIE (September 13 1989)
QWIP technology applications to ballistic missile defense
Proceedings of SPIE (August 11 1998)
Peeling the onion an heuristic overview of hit to...
Proceedings of SPIE (March 25 2005)
IRFPA development for ballistic missile defense needs
Proceedings of SPIE (January 23 2003)

Back to Top