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8 September 2015 Modeling spectrally varying resolution in broadband imaging systems
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The remote sensing system engineering process often makes use of modeling and simulation tools to flow down specifications to subsystems and components, and/or to predict performance given a particular set of defined capabilities. A persistent question in the development and use of such tools is that of appropriate level of fidelity. In this paper we look at one problem area encountered in the simulation of panchromatic and other broadband imaging systems, that of accounting for spectrally varying resolution over the band. An established method for treating this variation is that of the polychromatic optical transfer function (OTF), but this technique imposes a measure of complexity on the simulation tool software architecture, as well as on users who must subsequently interact with it. We present a methodology for assessing the required level of fidelity for this problem and show that under some conditions it appears possible to forgo the polychromatic OTF formalism, or else to treat it with less than full rigor, with minimal loss in accuracy.
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Stephen A. Cota, Scott L. Schnee, and Adam L. Loverro "Modeling spectrally varying resolution in broadband imaging systems", Proc. SPIE 9607, Earth Observing Systems XX, 96071A (8 September 2015);

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