Real-Time Nonuniformity Correction For Focal Plane Arrays Using 12-Bit Digital Electronics

P. Mackey; F. R. Barone; N. A. Chu

doi:10.1117/12.932833

7 December 1981 Real-Time Nonuniformity Correction For Focal Plane Arrays Using 12-Bit Digital Electronics

P. Mackey, F. R. Barone, N. A. Chu

Author Affiliations +

Proceedings Volume 0292, Processing of Images and Data from Optical Sensors; (1981) https://doi.org/10.1117/12.932833
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

The element-to-element variations caused by DC offset and responsivity non-uniformities of infrared focal plane arrays used in staring imaging systems must be reduced in order to achieve the desired performance. This paper discusses the design and performance of digital electronics for non-uniformity correction based on a two-temperature calibration technique. Unique features of the system include 12-bit dynamic range, compact size, a single arithmetic processor and microsequencer control with several levels of pipelining to provide flexible operation. The current configuration operates with arrays as large as 64x64 with data rates up to 60 Hz per frame. Data will be presented on noise characteristics and the effectiveness of offset and responsivity corrections. The usefulness of this system for evaluating focal plane arrays is demonstrated using an infrared CID.

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P. Mackey, F. R. Barone, and N. A. Chu "Real-Time Nonuniformity Correction For Focal Plane Arrays Using 12-Bit Digital Electronics", Proc. SPIE 0292, Processing of Images and Data from Optical Sensors, (7 December 1981); https://doi.org/10.1117/12.932833

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