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The analysis of optical propagation through both deterministic and stochastic refractive-index fields may be substantially
simplified if diffraction effects can be neglected. With regard to simplification, it is known that certain geometricaloptics
predictions often agree well with field observations but it is not always clear why this is so. Here, a new
investigation of this issue is presented involving wave optics and geometrical (ray) optics computer simulations of a
beam of visible light propagating through fully turbulent, homogeneous and isotropic refractive-index fields. We
compare the computationally simulated, aperture-averaged angle-of-arrival variances (for aperture diameters ranging
from 0.5 to 13 Fresnel lengths) with theoretical predictions based on the Rytov theory.
David Voelz,Erandi Wijerathna,Xifeng Xiao, andAndreas Muschinski
"Angle-of-arrival variance of waves and rays in strong atmospheric scattering: split-step simulation results", Proc. SPIE 10410, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017, 104100Y (6 September 2017); https://doi.org/10.1117/12.2275992
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David Voelz, Erandi Wijerathna, Xifeng Xiao, Andreas Muschinski, "Angle-of-arrival variance of waves and rays in strong atmospheric scattering: split-step simulation results," Proc. SPIE 10410, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017, 104100Y (6 September 2017); https://doi.org/10.1117/12.2275992