Computer Science
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..685..152m&link_type=abstract
IN: Infrared technology XII; Proceedings of the Meeting, San Diego, CA, Aug. 19, 20, 1986 (A88-12828 02-35). Bellingham, WA, Soc
Computer Science
Arrays, Focal Plane Devices, Infrared Detectors, Mercury Cadmium Tellurides, Photovoltaic Conversion, Signal Processing, Algorithms, Analog Circuits, Digital Techniques, Silicon
Scientific paper
This paper discusses a signal processing unit developed for two-dimensional Cadmium Mercury Telluride-Silicon (CMT-Si) hybrid photovoltaic detector arrays. The unit overcomes the severe fixed pattern noise problems associated with these detectors by performing the required nonuniformity removal in the analogue domain without the use of digital signal processing or fast, high resolution analogue-to-digital converters. The reasons for the adoption of this approach stem from the need for a compact, high speed IR imaging sysem for use in automatic weapon guidance and homing systems (particularly in the antiarmour role). A prototype system using this approach has been developed and used to operate a 32 x 32-element Random Access Line Scanned Array at frame rates in excess of 200Hz with measured NETD of less than 0.1 C. This same system, without further modification, will be capable of operating 64 x 64 element detector arrays with frame rates in excess of 400Hz, if required.
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