Signal Processing And Compensation Electronics For Junction Field-Effect Transistor (JFET) Focal Plane Arrays

Karl R. Wittig

doi:10.1117/12.932809

30 June 1982 Signal Processing And Compensation Electronics For Junction Field-Effect Transistor (JFET) Focal Plane Arrays

Karl R. Wittig

Author Affiliations +

Proceedings Volume 0311, Mosaic Focal Plane Methodologies II; (1982) https://doi.org/10.1117/12.932809
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

A signal processing system has been designed and constructed for a pyroelectric infrared area detector which uses a matrix-addressable JFET array for readout and for on-focal plane preamplification. The system compensates for all offset and gain nonuniformities in and after the array. Both compensations are performed in real time at standard television rates, so that changes in the response characteristics of the array are automatically corrected for. Two-point compensation is achieved without the need for two separate temperature references. This paper describes the focal plane circuitry used to read out the array, the offset and gain compensation algorithms, the architecture of the signal processor, and the system hardware.

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Karl R. Wittig "Signal Processing And Compensation Electronics For Junction Field-Effect Transistor (JFET) Focal Plane Arrays", Proc. SPIE 0311, Mosaic Focal Plane Methodologies II, (30 June 1982); https://doi.org/10.1117/12.932809

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