Abstract

By using results from perturbation techniques for weak turbulence and the asymptotic theory for strong turbulence, we develop expressions for the parameters α and ρ of the I–K distribution in terms of the Rytov variance for plane waves ${\sigma }_1^2=1.23C_n^2\hspace{0.17em}{k}^{7/6}{L}^{11/6}$ and the inner scale of turbulence parameter l₀. Comparisons of the resulting scintillation index to experimental data and numerical results from the solution of the fourth-moment equation for 3-D propagation show good agreement.

© 1988 Optical Society of America

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