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Proceedings Paper

Refraction effects and wavelength dependence
Author(s): J. Claverie; D. Dion
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Paper Abstract

The performances of Electro-Optical (EO) systems such as visible or infrared cameras, lasers, operating within the Marine Surface Boundary Layer (MSBL), i.e. at heights up to a few tens of meters above the sea surface, are disturbed by various propagation mechanisms: molecular attenuation, aerosol extinction, refraction and turbulence. Refraction is responsible for focusing and defocusing of rays, detection range limitations, mirage formation and angular deviation. The refractive index depends on atmospheric pressure, air temperature and air humidity. Within the optical transmission bands, it also depends on the wavelength. In this paper, the results provided by two different formulations of the refractive index associated with the same ray tracing program are compared and discussed.

Paper Details

Date Published: 28 September 2006
PDF: 7 pages
Proc. SPIE 6364, Optics in Atmospheric Propagation and Adaptive Systems IX, 636404 (28 September 2006); doi: 10.1117/12.688305
Show Author Affiliations
J. Claverie, CREC St-Cyr/LESTP (France)
D. Dion, RDDC Valcartier (Canada)

Published in SPIE Proceedings Vol. 6364:
Optics in Atmospheric Propagation and Adaptive Systems IX
Anton Kohnle; Karin Stein, Editor(s)

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