Repositório Institucional da Produção Científica da Marinha do Brasil (RI-MB)

Please use this identifier to cite or link to this item: https://www.repositorio.mar.mil.br/handle/ripcmb/844356
Title: Ray Tracing and Applications to an Evaporation Duct Model Based on Data from Oceanographic Buoy Sensors
metadata.dc.contributor: Costa, Emanoel Paiva de Oliveira
Authors: Freitas, Leonardo de Lima
Costa, Emanoel Paiva de Oliveira
Keywords: Raytracing
Evaporation duct
Issue Date: 2019
Publisher: Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Citation: FREITAS, Leonardo L.; COSTA, Emanoel. Ray Tracing and Applications to an Evaporation Duct Model Based on Data from Oceanographic Buoy Sensors. J. Microw. Optoelectron. Electromagn. Apl., São Caetano do Sul , v. 18, n. 1, p. 96-113, Mar. 2019. http://dx.doi.org/10.1590/2179-10742019v18i11633.
Abstract: The two-dimensional ray tracing method allows an easy and fast modeling of tropospheric propagation in the microwave frequency range. A version of this method that determines ray trajectories, amplitudes and delays of the electromagnetic field, as well as the propagation loss in a two-dimensional inhomogeneous environment will be described. The implemented algorithm may consider generalized maps of modified refractivity (or refractive modulus), including not only the vertical gradients, but also their horizontal variations along the path between transmitter and receiver. Next, the present paper will discuss the results from the application of a model of evaporation duct height to data from instruments installed in sea buoys located along the Brazilian coast. Finally, the results from the application of the ray-tracing model to evaporation ducts will be presented, to analyze the propagation of microwave signals in the maritime environment. These results will also be compared with correspon ding ones from the software Advanced Refractive Effects Prediction System 3.6, based on the numerical solution of a parabolic equation.
Access: Open access
URI: https://www.repositorio.mar.mil.br/handle/ripcmb/844356
ISSN: 2179-1074
Type: Journal article
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