Evaluation of EM‐wave propagation in fully three‐dimensional atmospheric refractive index distributions

Abstract

[1] We present a novel numerical method, based on high-frequency localization, for evaluation of electromagnetic-wave propagation through atmospheres exhibiting fully three-dimensional (height, range and cross-range) refractive index variations. This methodology, which is based on localization of Rytov-integration domains to small tubes around geometrical optics paths, can accurately solve three-dimensional propagation problems in orders-of-magnitude shorter computing times than other algorithms available presently. For example, the proposed approach can accurately produce solutions for propagation of %20 cm GPS signals across hundreds of kilometers of realistic, threedimensional atmospheres in computing times on the order of 1 hour in a present-day single-processor workstation, a task for which other algorithms would require, in such single-processor computers, computing times on the order of several months.Citation: Chaubell, J., O. P. Bruno, and C. O. Ao (2009), Evaluation of EM-wave propagation in fully three-dimensional atmospheric refractive index distributions, Radio Sci., 44, RS1012,

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