Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Rytov approximation of the irradiance covariance and variance of a retroreflected optical beam in atmospheric turbulence

Not Accessible

Your library or personal account may give you access

Abstract

The irradiance (intensity) covariance and variance functions associated with a reflected Gaussian-beam wave from a glint target (retroreflector) are calculated and compared with similar results based on a specular target (smooth finite mirror). Detailed results are presented for the normalized irradiance variance, or scintillation index, of the reflected wave for both types of reflector in an improved model of atmospheric turbulence that incorporates a high-wave-number rise just before the dissipation range in addition to inner–outer-scale parameters. Numerical comparisons show that values of the normalized irradiance variance based on the improved model of refractive-index fluctuations (henceforth called the modified spectrum) can be up to 32% greater than those predicted by the Kolmogorov power-law spectrum when the inner scale is comparable in size with the first Fresnel zone. All analytic expressions derived here are based on weak-fluctuation theory using generalized spectral representations of the complex phase perturbations.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Mutual coherence function for a double-passage retroreflected optical wave in atmospheric turbulence

L. C. Andrews, R. L. Phillips, and W. B. Miller
Appl. Opt. 36(3) 698-708 (1997)

Effects of the refractive index spectral model on the irradiance variance of a Gaussian beam

W. B. Miller, J. C. Ricklin, and L. C. Andrews
J. Opt. Soc. Am. A 11(10) 2719-2726 (1994)

Coherence properties of a reflected optical wave in atmospheric turbulence

L. C. Andrews, C. Y. Young, and W. B. Miller
J. Opt. Soc. Am. A 13(4) 851-861 (1996)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (56)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved