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Proceedings Paper

SWIR sky-glow cloud correlation with NIR and visible clouds: an urban and rural comparison
Author(s): David C. Dayton; John D. Gonglewski; Chad St. Arnauld; Ishon Mons; Dennis Burns
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Paper Abstract

Between the wavelengths of the visible and the Short Wave Infrared (SWIR), the glow of the sky from chemical radiance and absorption changes dramatically. Thus too, the structure and appearance of clouds change. By directly and simultaneously examining clouds in an urban and a rural setting, we investigate the correlation between the appearance of clouds present in the SWIR, NIR, and visible. The experimental setup consists of two sensors, one a NIR to SWIR sensitive InGaAs array, and the other a visible CCD, both co-located on an AZ-EL mount, and both co-boresighted so that different viewing angles of the sky are possible. The SWIR sensor is sensitive from 0.9 μm to 1.7 μm. The CCD sensor collects cloud images in the visible region. By making corrections for focal length and pixel size, the visible and SWIR data can be compared. After taking several nights of data in the urban environment of Albuquerque, NM, the entire system was then re-located to a rural location in southern New Mexico.

Paper Details

Date Published: 28 September 2009
PDF: 7 pages
Proc. SPIE 7476, Optics in Atmospheric Propagation and Adaptive Systems XII, 747607 (28 September 2009); doi: 10.1117/12.832057
Show Author Affiliations
David C. Dayton, Applied Technology Associates (United States)
John D. Gonglewski, Air Force Research Lab. (United States)
Chad St. Arnauld, Air Force Research Lab. (United States)
Ishon Mons, Textron Defense Systems Kauai (United States)
Dennis Burns, Textron Defense Systems Kauai (United States)

Published in SPIE Proceedings Vol. 7476:
Optics in Atmospheric Propagation and Adaptive Systems XII
Anton Kohnle; Karin Stein; John D. Gonglewski, Editor(s)

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