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Scintillation correlation between forward and return spherical waves |
Applied Optics, Vol. 51, Issue 15, pp. 2888-2893 (2012)
http://dx.doi.org/10.1364/AO.51.002888
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Abstract
According to the point-source point-receiver (PSPR) reciprocity, the received field remains equal when the positions of a point source and point receiver are interchanged. We extend the PSPR scenario to a finite receiver that spatially averages scintillation over its aperture. By use of weak-fluctuation theory, an analytical expression for the correlation coefficient between the received powers at both link ends is provided. The effects of turbulence profile, receiver aperture size, and central obscuration on the correlation are assessed. Because correlation is obtained to the detriment of antenna gain and aperture averaging, the net benefit of the channel reciprocity is highly scenario dependent.
© 2012 Optical Society of America
OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(030.1670) Coherence and statistical optics : Coherent optical effects
(060.2605) Fiber optics and optical communications : Free-space optical communication
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: October 3, 2011
Revised Manuscript: January 12, 2012
Manuscript Accepted: January 12, 2012
Published: May 16, 2012
Citation
Nicolas Perlot and Dirk Giggenbach, "Scintillation correlation between forward and return spherical waves," Appl. Opt. 51, 2888-2893 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-15-2888
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