4 August 2004 Emissive infrared projector temperature resolution limiting factors
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Abstract
Array nonuniformity is the dominant factor limiting the temperature resolution of the current generation of emissive dynamic infrared scene projectors. Over the past five years or so numerous papers have been presented associated with the measurement of the array nonuniformities and the design and implementation of efficient nonuniformity correction (NUC) techniques. A considerable amount of progress has been made towards achieving the desired NUC goals. A number of factors, however, limit the achievement of fine temperature resolution within emissive infrared projection systems, improvements still being needed to achieve residual nonuniformity levels low enough to satisfy the demanding requirements of low NETD thermal imaging systems. In particular, the NUC camera has a strong influence on the effectiveness of the projector NUC procedure. In this paper we describe an alternative method for collecting projector NUC data that relies on the use of several integration times and also multiple calibration points for correcting the camera nonuniformities, the method being designed to improve the accuracy of the projector NUC procedure.
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Leszek Swierkowski, Leszek Swierkowski, Robert A. Joyce, Robert A. Joyce, Owen M. Williams, Owen M. Williams, } "Emissive infrared projector temperature resolution limiting factors", Proc. SPIE 5408, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing IX, (4 August 2004); doi: 10.1117/12.542937; https://doi.org/10.1117/12.542937
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