Groundwave propagation modeling: problem-matched analyticalformulations and direct numerical techniques |
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Authors: | Sevgi L Akleman F Felsen LB |
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Affiliation: | Electron. & Commun. Eng. Dept., DOGUS Univ., Istanbul; |
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Abstract: | In this overview of groundwave propagation, we address a particular class of propagation scenarios in the presence of surface terrain and atmospheric refractivity. Beginning with idealized analytically solvable models over a smooth spherical Earth, we trace the progression toward more "reality" through physics-based numerical algorithms, operating in the frequency and short-pulse time domain, which take advantage of computational resources. An extensive sequence of simulations for various terrains and atmospheric refractivities, as well as different source-receiver arrangements and operating frequencies, serves to calibrate these algorithms one against the other, and establishes the range of problem parameters for which each is more effective |
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