A modified radiopropagation multipath model for constant refractivity gradient profiles
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Universidade Federal de Minas Gerais
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Artigo de periódico
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This paper presents a radiopropagation algorithm based
on a Ray Tracing (RT) technique that combines a modified multipath model for constant refractivity gradient profiles and the
Uniform Theory of Diffraction (UTD). A novel formulation is proposed by the authors for calculation and ground-reflection analysis
of ray paths depending on atmospheric refractivity. The algorithm
introduced herein was evaluated in a mixed scenario and in two
more realistic case studies, under conditions of constant refractivity
gradient and lossy terrain profiles. Pathloss results are obtained
and compared with Parabolic Equation (PE) numerical solution
results at 2.0 GHz, 3.5 GHz and 5.4 GHz. In such conditions, the
modified radiopropagation multipath algorithm with atmospheric
refractivity introduced herein showed satisfactory results.
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Atmospheric refractivity, multipath model, UTD, PE numerical solution, RT techniques
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https://www.scielo.br/j/jmoea/a/dD5nZtkgzkDm7VynxjfhDQC/?format=pdf&lang=en