Spatial and temporal variability of SWIR air glow measurements

David Dayton; Jeff Allen; John Gonglewski; Mike Myers; Gregory Fertig; Rudy Nolasco; Francisco Maia

doi:10.1117/12.866767

11 October 2010 Spatial and temporal variability of SWIR air glow measurements

David Dayton, Jeff Allen, John Gonglewski, Mike Myers, Gregory Fertig, Rudy Nolasco, Francisco Maia

Proceedings Volume 7828, Optics in Atmospheric Propagation and Adaptive Systems XIII; 78280E (2010) https://doi.org/10.1117/12.866767
Event: SPIE Remote Sensing, 2010, Toulouse, France

Abstract

It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (~85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band between 0.9 and 1.7 μm wave length. This has been demonstrated as an effective illumination source for night time imaging applications. It addition it has been shown that observation of the spatial and temporal variations of the illumination can be used to characterize atmospheric tidal wave actions in the air glow region. These spatiotemporal variations manifest themselves as traveling wave patterns whose period and velocity are related to the wind velocity at 85 km as well as the turbulence induced by atmospheric vertical instabilities. We are interested in studying these phenomena for a variety of reasons. First they can give an insight into upper atmospheric physics, second we would like to understand the variations in order to determine if air glow can be used as a reliable illumination source for night time terrestrial imaging. To that end we have been collecting data on ground irradiance from air glow over the past six months at a site on the island of Kauai. The purpose of this paper is to discuss some initial analysis of this data.

Citation Download Citation

David Dayton, Jeff Allen, John Gonglewski, Mike Myers, Gregory Fertig, Rudy Nolasco, and Francisco Maia "Spatial and temporal variability of SWIR air glow measurements", Proc. SPIE 7828, Optics in Atmospheric Propagation and Adaptive Systems XIII, 78280E (11 October 2010); https://doi.org/10.1117/12.866767

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