CASPIAN JOURNAL
MANAGEMENT AND HIGH TECHNOLOGIES
Analysis of models of radiowave propagation over water surface and use of them while calculating level of electromagnetic field in the mobile radio communication systems
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Read | Pishchin O.N., Bestaeva N.V., Zubova A.D., Orlova A.A. Analysis of models of radiowave propagation over water surface and use of them while calculating level of electromagnetic field in the mobile radio communication systems // Caspian journal : management and high technologies. — 2017. — №3. — pp. 121-130. |
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Pishchin O.N. - Cand. Sci. (Engineering), Astrakhan Technical State University, 25 Tatishchev St., Astrakhan, 414025, Russian Federation, o.pishin@yandex.ru
Bestaeva N.V. - graduate student, Astrakhan Technical State University, 25 Tatishchev St., Astrakhan, 414025, Russian Federation, nat.bestaeva@yandex.ru
Zubova A.D. - graduate student, Astrakhan Technical State University, 25 Tatishchev St., Astrakhan, 414025, Russian Federation, zubovaanastasia33@gmail.com
Orlova A.A. - graduate student, Astrakhan State University, 20Р° Tatishchev St., Astrakhan, 414040, Russian Federation, anna.a_orlova@mail.ru
Designing mobile radio communication systems (MRCS) one needs adequate accounting of levels of attenuation of radio signals propagating over different surfaces. At the same time, models of attenuation levels of radio signals propagating over water surface (WS) and those in other conditions significantly differ. To create the model of attenuation levels of radio signals propagating over WS in cellular communication systems (CCS) the author has conducted the related pilot study. To make in situ measurements the professional measuring equipment was used, exactly Drive Test Agilent E7475A, which is the integrated measuring system for analysis of radio covering in cellular communication systems. On the basis of measurements made there was suggested a model which can be used for calculating radio wave propagation in cellular communication systems over WS, as well as for CAD system for MRCS. It was obtained a running coefficient for calculating attenuation of cellular communication signals over WS, which simplifies carrying out preliminary calculations while designing MRCS. There are presented results of comparative analysis of levels of radio signals attenuation in UHF range for different types of underlying surface (free space, rural area, water surface). It was made a conclusion that taking into consideration-decreased levels of radio signals attenuation while they are propagating over WS lets optimize allocation of receive/transmit stations in MRCS.
Key words: системы мобильной радиосвязи, распространение радиоволн, математические модели, затухание уровня сигнала, подстилающая поверхность, водная поверхность, калибровка моделей, проведение расчетов, использование в САПР, mobile radio communication systems, radi