Title

Modeling The Pdf For The Irradiance Of An Uplink Beam In The Presence Of Beam Wander

Keywords

Atmospheric turbulence; Beamwave propagation; Scintillation; Scintillation statistics

Abstract

Recent studies of ground-to-space beam propagation have revealed significant departures from Rytov theory when the beam diameter w 0 is on the order of the atmospheric coherence width r 0. 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 w 0 / r 0 ≪ 1 to the negative exponential distribution when w 0 / r 0 ≫ 1. The most interesting regime is the transition region near w 0 / r 0 = 1, where the statistical behavior of tracked and untracked beams differs significantly.

Publication Date

8-23-2006

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

6215

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.666547

Socpus ID

33747370863 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33747370863

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