Theoretical study of the effect of different types of tropical rainfall on microwave and millimeter-wave propagation

dc.contributor.authorAjewole, Oludare
dc.contributor.authorKolawole, L.B
dc.contributor.authorAjayi, G.O
dc.date.accessioned2023-05-13T18:01:51Z
dc.date.available2023-05-13T18:01:51Z
dc.date.issued1999-09
dc.description.abstractIn this paper, the effects of tropical rainfall on the propagation of microwave and millimeter-wave signals on terrestrial paths have been investigated. Quantitative evaluation of spheroidal raindrop scattering parameters such as the scattering amplitude functions, total and scattering cross sections, and so on, were carried out for linear polarization (horizontal and vertical), using the least squares fitting method over the frequency range 1–100 GHz. Incident radio signals are assumed plane and arrive normally on the raindrop axis. For the purpose of application to slant paths, two other incident angles, 50° and 70°, were considered. The computed forward scattering amplitude functions were employed to compute the complex effective propagation constant of the radio signals in four tropical rainfall types: drizzle, widespread, shower, and thunderstorm. The corresponding specific attenuation and specific phase shift were computed. Specific attenuation and phase shift due to the rain types for circularly polarized radio signals were also derived. The parameters of the power law relationship between attenuation, phase shift, and rain rate were computed for each rain type and compared with existing temperate and tropical models. The problem of rain-induced depolarization was also investigated by computing the cross polarization discrimination for the four rainfall types over the frequency range 1-50 GHz, which is of immediate importance to system designersen_US
dc.identifier.otherDOI: 10.1029/1999RS900063
dc.identifier.urihttps://ir.oauife.edu.ng/123456789/5613
dc.language.isoenen_US
dc.subjectthe propagation of microwaveen_US
dc.subjectmillimeter-wave signalsen_US
dc.subjectthe scattering amplitude functionsen_US
dc.subjectlinear polarization (horizontal and verticalen_US
dc.subjectmillimeter-wave propagationen_US
dc.titleTheoretical study of the effect of different types of tropical rainfall on microwave and millimeter-wave propagationen_US
dc.title.alternativePROG ELECTROMAGN RESen_US
dc.typeJournalen_US
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