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Proceedings Article

Modeling the PDF for the irradiance of an uplink beam in the presence of beam wander

[+] Author Affiliations
Ronald Parenti, Richard J. Sasiela

Lincoln Lab., Massachusetts Institute of Technology

Larry C. Andrews, Ronald L. Phillips

Univ. of Central Florida

Proc. SPIE 6215, Atmospheric Propagation III, 621508 (May 17, 2006); doi:10.1117/12.666547
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From Conference Volume 6215

  • Atmospheric Propagation III
  • Cynthia Y. Young; G. Charmaine Gilbreath
  • Orlando (Kissimmee), FL | April 17, 2006

abstract

Recent studies of ground-to-space beam propagation have revealed significant departures from Rytov theory when the beam diameter w0 is on the order of the atmospheric coherence width r0 . It has been shown that such departures from Rytov theory are primarily a consequence of beam wander and other low-order aberrations. In this paper we discuss modeling of the probability density function (PDF) for uplink beams. In particular, we show how the PDF transitions from lognormal statistics when w0 /r0 << 1 to the negative exponential distribution when w0/r0 >> 1. The most interesting regime is the transition region near w0/r0 = 1, where the statistical behavior of tracked and untracked beams differs significantly.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Ronald Parenti ; Richard J. Sasiela ; Larry C. Andrews and Ronald L. Phillips
"Modeling the PDF for the irradiance of an uplink beam in the presence of beam wander", Proc. SPIE 6215, Atmospheric Propagation III, 621508 (May 17, 2006); doi:10.1117/12.666547; http://dx.doi.org/10.1117/12.666547


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