Atmospheric occultation of optical intersatellite links: coherence loss and related parameters
Applied Optics, Vol. 48, Issue 12, pp. 2290-2302 (2009)
http://dx.doi.org/10.1364/AO.48.002290
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Abstract
The Rytov theory is applied to find the wave structure function of a laser beam transmitted from one satellite to another and propagating through the turbulent atmosphere. The phase-screen approximation is used. Taking into account refractive-index anisotropy, outer scale, and atmospheric mean-refraction defocusing, we provide expressions of the wave structure function for a spherical wave. The width and time of coherence at the receiver are evaluated. Expression for the beam spread is found using the extended Huygens–Fresnel principle, and beam wander is assessed. Beam wander occurs only for very narrow beams. Links involving low-Earth-orbit and geosynchronous satellites are studied as examples. Finally, conditions where optical tracking is perturbed by the atmosphere are examined.
© 2009 Optical Society of America
OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(060.2605) Fiber optics and optical communications : Free-space optical communication
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: October 20, 2008
Revised Manuscript: March 19, 2009
Manuscript Accepted: March 29, 2009
Published: April 14, 2009
Citation
Nicolas Perlot, "Atmospheric occultation of optical intersatellite links: coherence loss and related parameters," Appl. Opt. 48, 2290-2302 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-12-2290
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