Конференции ИВТ СО РАН

MIT-2009
Международная конференция "Математические и информационные технологии"
(VIII конференция "Вычислительные и информационные технологии в науке, технике и образовании")

Копаоник, Сербия, 27 - 31 августа 2009 года;
Будва, Черногория, 31 августа - 5 сентября 2009 года

Тезисы докладов

Modeling of Radio Propagation in the Land-Satellite Link through the Stormtime Ionosphere

Blaunstein N.

Ben-Gurion University of the Negev,
Department of Communication Systems,
Engineering Faculty of Engineering Science (Beer-Sheva)

This paper presents the intensity and phase fluctuations dependence on the degree of ionospheric plasma perturbations occur during magnetic storm based on experiments by GPS monitoring of the ionosphere. During this natural phenomenon, anomalous absorption caused by decrease of the total electronic content, and fast fading of GPS radio signals caused by generation of plasma small-scale irregularities are observed experimentally. In order to present the effect of scattering caused by plasma irregularities generated during magnetic storm, 2-D phase-screen model is introduced. A satisfactory explanation of fading phenomena observed experimentally is presented based on the corresponding theoretical framework. It was found that during magnetic storm, when experimentally observed deviations of plasma density in the perturbed ionosphere can be changed at 10%-20%, the corresponding small-scale and moderate-scale plasma density irregularities in the stormtime F region yield strong fast fading of VHF/UHF radio signals with sufficient signal intensity fluctuations (up to 10%) and phase fluctuations (up to hundreds radians), which finally can significantly decrease the spectral efficiency, capacity and signal data rate in multipath land-satellite communication link with fading passing through the perturbed ionosphere.

Примечание. Тезисы докладов публикуются в авторской редакции

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