Title

New Theory Of Optical Scintillation For Moderate-To-Strong Fluctuations

Abstract

A model of irradiance fluctuations for a propagating optical wave through a random medium is developed here under the assumption that small-scale irradiance fluctuations are modulated by large-scale irradiance fluctuations of the wave. The upper bound for small turbulent cells is defined by the smallest cell size among the Fresnel zone or transverse spatial coherence radius of the optical wave. The largest cell size between the Fresnel zone and scattering disk defines the lower bound for the small turbulent cells. In addition to the scintillation index, we also develop expressions for the irradiance covariance function and temporal spectrum of irradiance. Quantitative values predicted by these models agree well with experimental and simulation data previously published. An application of the method is also presented for uplink/downlink optical communication channels to/from a satellite.

Publication Date

1-1-1999

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

3609

Number of Pages

90-100

Document Type

Article

Personal Identifier

scopus

Socpus ID

0032627460 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0032627460

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