Quadratic structure functions and scintillation

Martin A. Plonus; Shuenn Jyi Wang

doi:10.1364/AO.24.000570

Quadratic structure functions and scintillation

Martin A. Plonus, Shuenn Jyi Wang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The quadratic structure function (QSF) approximation by itself does not imply a tilt-only medium in which log-amplitude fluctuations are absent. When the QSF is applied to the fourth-order coherence function, the signal variance has contributions from log-amplitude fluctuations and beam wander but not beam spreading. However, the use of the QSF in the log-amplitude correlation function is limited as it can result in increasing correlation functions for weak turbulence.

Original language	English (US)
Pages (from-to)	570-571
Number of pages	2
Journal	Applied optics
Volume	24
Issue number	4
DOIs	https://doi.org/10.1364/AO.24.000570
State	Published - Feb 15 1985

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.24.000570

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title = "Quadratic structure functions and scintillation",

abstract = "The quadratic structure function (QSF) approximation by itself does not imply a tilt-only medium in which log-amplitude fluctuations are absent. When the QSF is applied to the fourth-order coherence function, the signal variance has contributions from log-amplitude fluctuations and beam wander but not beam spreading. However, the use of the QSF in the log-amplitude correlation function is limited as it can result in increasing correlation functions for weak turbulence.",

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AB - The quadratic structure function (QSF) approximation by itself does not imply a tilt-only medium in which log-amplitude fluctuations are absent. When the QSF is applied to the fourth-order coherence function, the signal variance has contributions from log-amplitude fluctuations and beam wander but not beam spreading. However, the use of the QSF in the log-amplitude correlation function is limited as it can result in increasing correlation functions for weak turbulence.

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Quadratic structure functions and scintillation

Abstract

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