General Rytov Approximation

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Authors
  1. Potvin, G.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN);Optical Society of America, Washington DC (US)
Abstract
We examine how the Rytov approximation describing log-amplitude and phase fluctuations of a wave propagating through weak uniform turbulence can be generalized to the case of turbulence with a large-scale nonuniform component. We show how the large-scale refractive index field creates Fermat rays using the path integral formulation for paraxial propagation. We then show how the second-order derivatives of the Fermat ray action affect the Rytov approximation, and we discuss how a numerical algorithm would model the general Rytov approximation.
Keywords
wave propagation;turbulence;path integral;Rytov approximation
Report Number
DRDC-RDDC-2015-P073 — External Literature
Date of publication
01 Oct 2015
Number of Pages
9
DSTKIM No
CA041807
CANDIS No
802857
Format(s):
Electronic Document(PDF)

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