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Proceedings Paper

Design of an optical remote sensing system for measuring refractive turbulence in the Antarctic boundary layer
Author(s): Gary G. Gimmestad; J. R. White; Mikhail S. Belen'kii
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Paper Abstract

We have investigated the feasibility of building an innovative optical remote sensing instrument to monitor the vertical profile of the refractive index structure characteristic Cn2. There is currently no active optical remote sensing instrument which is capable of doing this. Calculations have been performed for a system designed specifically to resolve a site survey question at the South Pole, where recent balloon soundings suggest that excellent astronomical seeing conditions could be obtained by mounting telescopes above a thin layer of atmospheric refractive turbulence near the surface. The new sensor considered here is essentially an imaging lidar which measures range- dependent laser beam wander, from which the vertical profile of Cn2 can be derived. Calculations based on atmospheric characteristics and preliminary design parameters have been carried out for a practical system based on commercially available components. Design parameters include the choice of operating wavelength, elevation angle, transmitter and receiver diameters, and image scale. The calculations indicate that it is feasible to develop an optical remote sensor for monitoring vertical profiles of Cn2 at the South Pole.

Paper Details

Date Published: 14 October 1996
PDF: 11 pages
Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); doi: 10.1117/12.254170
Show Author Affiliations
Gary G. Gimmestad, Georgia Institute of Technology (United States)
J. R. White, Georgia Institute of Technology (United States)
Mikhail S. Belen'kii, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2828:
Image Propagation through the Atmosphere
Christopher Dainty; Luc R. Bissonnette, Editor(s)

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