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Optical Engineering

Resolution modeling of dispersive imaging spectrometers
Author(s): John F. Silny
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Paper Abstract

This paper presents best practices for modeling the resolution of dispersive imaging spectrometers. The differences between sampling, width, and resolution are discussed. It is proposed that the spectral imaging community adopt a standard definition for resolution as the full-width at half maximum of the total line spread function. Resolution should be computed for each of the spectral, cross-scan spatial, and along-scan spatial/temporal dimensions separately. A physical optics resolution model is presented that incorporates the effects of slit diffraction and partial coherence, the result of which is a narrower slit image width and reduced radiometric throughput.

Paper Details

Date Published: 18 August 2017
PDF: 10 pages
Opt. Eng. 56(8) 081813 doi: 10.1117/1.OE.56.8.081813
Published in: Optical Engineering Volume 56, Issue 8
Show Author Affiliations
John F. Silny, Raytheon Space and Airborne Systems (United States)

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