From Event: SPIE Optical Engineering + Applications, 2018
Detection of gases by a remote sensor has wide-ranging utility. The optimum sensor design depends on several key characteristics of the scene and imaging geometry. A generalized analysis of the signal-to-noise ratio (SNR) and spatial resolution shows that the optimum sensor F-number depends on the spatial distribution of the gas. Detection of a broad area emission results in a different optimal sensor configuration than when the emission is localized. The optimum F-number also depends on the exposure settings. A parametric analysis shows that detection performance varies between F#-2 and F#4. The results of this paper provide guidance for sensor designers to optimize gas detection by imaging spectrometers.
John F. Silny and Brad A. Flanders, "Imaging spectrometer F-number optimization for remote sensing of gases," Proc. SPIE 10768, Imaging Spectrometry XXII: Applications, Sensors, and Processing, 1076803 (Presented at SPIE Optical Engineering + Applications: August 20, 2018; Published: 18 September 2018); https://doi.org/10.1117/12.2323616.
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