Vol. 11, issue 11, article # 3

pdf Voitsekhovich V. V., Kuznetsov D. Rytov approximation: comments concerning the range of its applicability. // Atmospheric and oceanic optics. 1998. V. 11. No. 11. P. 991-1000.
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We consider here some aspects of the problem on applicability limits of Rytov approximation that is used for calculating turbulence-induced fluctuations. The errors of approximation are estimated by way of comparing the results calculated by Rytov with those obtained by numerically solving the parabolic equation. It is shown that the applicability range of interest strongly depends on the type of quantities to be calculated. Also, some aspects related to the singular behavior of the amplitude in the presence of phase dislocations are discussed.