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Optical Engineering

Spectral and radiometric calibration of midwave and longwave infrared cameras
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Paper Abstract

Accurate spectral and radiometric calibrations of IR cameras are needed to interpret infrared imagery properly, to monitor camera performance over time, and to evaluate new imaging radiometers. In this paper, the physical basis for calibrating IR cameras is derived from first principles, and a laboratory setup used to perform both radiometric and spectral calibrations is described. The calibration procedures used with this setup are then demonstrated on a midwave IR focal plane array camera, a midwave IR scanned camera, and a longwave IR scanned camera. The system spectral response and radiometric response of each camera is given and analyzed. An error analysis of approximating a camera's spectral response by an equivalent top-hat responsivity is also given.

Paper Details

Date Published: 1 February 2000
PDF: 6 pages
Opt. Eng. 39(2) doi: 10.1117/1.602370
Published in: Optical Engineering Volume 39, Issue 2
Show Author Affiliations
Marc D. Mermelstein, Naval Research Lab. (United States)
Keith A. Snail, Naval Research Lab. (United States)
Richard G. Priest, Naval Research Lab. (United States)

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