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Proceedings Paper

Optical refraction measurements over sea surface with lidar
Author(s): Arne Hagard; Rolf Persson; Ove K. S. Gustafsson
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Paper Abstract

A method for indirect determination of the refractive index profile in the atmospheric layer just above the sea surface with LIDAR is described. One important application is prediction of performance and particularly the maximum observation range of optical sensors. A lidar is placed near the sea surface and the lobe is scanned in a small vertical sector near the horizon. Returns from particles are recorded. The range to the point, where the laser beam reaches the sea surface, is determined from the lidar returns and stored together with the corresponding elevation angles. This information is compared to results from an optical propagation model to determine the vertical profile of the refractive index, which fits to the lidar results. Test measurements have been performed and results will be presented.

Paper Details

Date Published: 13 September 2004
PDF: 7 pages
Proc. SPIE 5412, Laser Radar Technology and Applications IX, (13 September 2004); doi: 10.1117/12.542252
Show Author Affiliations
Arne Hagard, FOI Swedish Defence Research Agency (Sweden)
Rolf Persson, FOI Swedish Defence Research Agency (Sweden)
Ove K. S. Gustafsson, FOI Swedish Defence Research Agency (Sweden)

Published in SPIE Proceedings Vol. 5412:
Laser Radar Technology and Applications IX
Gary W. Kamerman; Gary W. Kamerman, Editor(s)

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