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Proceedings Paper

An Optical Device For Path-Averaged Measurements Of Cn2
Author(s): G. R. Ochs; W. D. Cartwright
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Paper Abstract

The refractive index structure parameter (Cn2), a statistical measure of refractive index fluctuation in the atmosphere, is useful in predicting the intensity of atmospheric effects upon optical propagation. It can be derived from point measurements of high-speed temperature probes, but in many cases it is better to have a path-averaged measurement. Earlier optical techniques needed corrections for the inner scale of turbulence and were severely limited by the saturation of scintillation. This paper discusses an optical system developed at NOAA that is free of these problems, and makes path-averaged measurements of Cn2 over path lengths from 100 to 500 meters.

Paper Details

Date Published: 28 July 1981
PDF: 4 pages
Proc. SPIE 0277, Atmospheric Transmission, (28 July 1981); doi: 10.1117/12.931895
Show Author Affiliations
G. R. Ochs, NOAA/ERL/Wave Propagation Laboratory (United States)
W. D. Cartwright, NOAA/ERL/Wave Propagation Laboratory (United States)


Published in SPIE Proceedings Vol. 0277:
Atmospheric Transmission
Robert W. Fan, Editor(s)

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