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Comparison between a local and a nonlocal transparent boundary condition applied to the tropospheric ducting propagation problem
Author(s) -
Sirkova I. D.
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(20000405)25:1<44::aid-mop13>3.0.co;2-g
Subject(s) - atmospheric duct , discretization , boundary value problem , microwave , finite element method , boundary (topology) , troposphere , mathematical analysis , duct (anatomy) , mathematics , physics , computer science , engineering , telecommunications , meteorology , structural engineering , medicine , pathology , atmosphere (unit)
In this paper, a comparison is made between a local transparent boundary condition (LTBC) and a recently published nonlocal transparent boundary condition (NTBC) applied to the tropospheric ducting propagation (TDP) problem. The calculations are based on the parabolic equation (PE) approximation to the problem in conjunction with the finite‐element method (FEM). The reflectivity of the simulated LTBC and NTBC is studied for a set of discretization step sizes Δ z and Δ x for a typical ground‐based duct. An attempt is made to find the proper step sizes, assuring a rapid and accurate LTBC‐based solution for this TDP case. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 44–47, 2000.