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Multicolor and dual-band IR camera for missile warning and automatic target recognition

Multifarben- und Zweiband-IR-Kameras für Flugkörperwarnung und Zielerkennung
: Breiter, R.; Cabanski, W.; Mauk, K.-H.; Rode, W.; Ziegler, J.; Schneider, H.; Walther, M.

Watkins, W.R. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Targets and backgrounds VIII. Characterization and represantation : 1 - 3 April 2002, Orlando, USA
Bellingham/Wash.: SPIE, 2002 (SPIE Proceedings Series 4718)
ISBN: 0-8194-4468-5
Conference on Targets and Backgrounds <8, 2002, Orlando/Fla.>
Conference Paper
Fraunhofer IAF ()
multicolor-IR; Multifarben-IR; dual-band IR; Zweiband-IR; QWIP; missile warning; Flugkörperwarnung; target recognition; Zielerkennung

For applications like missile warning and automatic target recognition, AIM is presently launching its new 3rd generation high speed dual-color module. The focal plane array (FPA) is a mercury cadmium telluride (MCT) 192x192 56µm pitch device in a dual-color mid wave (MWIR) design. The module provides spectral selection with temporal and spatial coincidence for both colors using a new AIM proprietary technology. The spectral bands presently selected are 3.4-4 and 4.2-5µm with a full frame rate of 870Hz. Prior to the new devices, a sequential multicolor MCT camera with broadband detector and spectral selection using a rotating filter wheel was developed and evaluated. Results are shown to demonstrate the capabilities of spectral selective detection specifically for clutter and false alarm suppression in missile warning applications. A new algorithm was developed to allow highly sensitive detection of missile plumes without any need for non-uniformity correction for long-term stable operation and maximum dynamic range. An outlook is given on new activities at AIM on dual-band devices. The dual-band approach combining mid wave (MWIR) and long wave (LWIR) detection is specifically useful in automatic target recognition. The application, existing devices and the design goal of the new dual-band device are discussed together with experimental results.