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Proceedings Paper

Modeling wind in simulations of atmospheric optical propagation
Author(s): Nicolas Perlot; Joachim Horwath; Ralf Juengling
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Paper Abstract

In our attempt to better characterize optical turbulence effects, we generalized the common split-step approach of propagation simulations to spatio-temporal simulations. The time dimension is introduced by making a "local frozen turbulence assumption" which states that the local changes of the medium are dominated by wind transport and can be fully characterized by a (local) mean wind vector. We make a second simplifying assumption by neglecting wind components in the direction of propagation. The shifting theorem of Fourier theory is used in our implementation of the relative movement of the medium. As an example application, an optical downlink from a LEO satellite is illustrated and the fluctuations of the received optical field are estimated.

Paper Details

Date Published: 18 April 2005
PDF: 11 pages
Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); doi: 10.1117/12.590700
Show Author Affiliations
Nicolas Perlot, DLR (Germany)
Joachim Horwath, DLR (Germany)
Ralf Juengling, Portland State Univ. (United States)

Published in SPIE Proceedings Vol. 5712:
Free-Space Laser Communication Technologies XVII
G. Stephen Mecherle, Editor(s)

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