An Optical Device For Path-Averaged Measurements Of Cn2

G. R. Ochs; W. D. Cartwright

doi:10.1117/12.931895

28 July 1981 An Optical Device For Path-Averaged Measurements Of C_n²

G. R. Ochs, W. D. Cartwright

Proceedings Volume 0277, Atmospheric Transmission; (1981) https://doi.org/10.1117/12.931895
Event: 1981 Technical Symposium East, 1981, Washington, D.C., United States

Abstract

The refractive index structure parameter (C_n²), 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 C_n² over path lengths from 100 to 500 meters.

Citation Download Citation

G. R. Ochs and W. D. Cartwright "An Optical Device For Path-Averaged Measurements Of C_n²", Proc. SPIE 0277, Atmospheric Transmission, (28 July 1981); https://doi.org/10.1117/12.931895

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