Maximum Rain-Rate Evaluations in Aegean Archipelagos Hellas for Rain Attenuation Modeling at Microwave Frequencies

• Autorzy: Karagianni E.Α. , Vazouras C.N. , Papageorgiou E.H. , Sarantopoulos A.D. , Nistazakis H.E.

Identyfikatory

DOI

10.12716/1001.10.01.13

• Języki publikacji: EN

Abstrakty

EN

By utilizing meteorological data such as relative humidity, temperature, pressure, rain rate and precipitation duration at eight (8) stations in Aegean Archipelagos from six recent years (2007 – 2012), the effect of the weather on Electromagnetic wave propagation is studied. The EM wave propagation characteristics depend on atmospheric refractivity and consequently on Rain-Rate which vary in time and space randomly. Therefore the statistics of radio refractivity, Rain-Rate and related propagation effects are of main interest. This work investigates the maximum value of rain rate in monthly rainfall records, for a 5 min interval comparing it with different values of integration time as well as different percentages of time. The main goal is to determine the attenuation level for microwave links based on local rainfall data for various sites in Greece (L-zone), namely Aegean Archipelagos, with a view on improved accuracy as compared with more generic zone data available. A measurement of rain attenuation for a link in the S-band has been carried out and the data compared with prediction based on the standard ITU-R method.

Słowa kluczowe

EN

Aegean Archipelagos; rain attenuation modeling; microwave frequencies; rain-rate evaluations; microwaves; radar equipment; hydrometeorological conditions; signal propagation

• Wydawca: Faculty of Navigation, Gdynia Maritime University
• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2016
• Tom: Vol. 10, no. 1
• Strony: 117--123
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Karagianni E.Α.

• Hellenic Naval Academy, Piraeus, Greece

autor

Vazouras C.N.

• Hellenic Naval Academy, Piraeus, Greece

autor

Papageorgiou E.H.

• Hellenic Naval Academy, Piraeus, Greece

autor

Sarantopoulos A.D.

• Hellenic National Meteorological Service, Eliniko, Greece

autor

Nistazakis H.E.

• National and Kapodistrian University of Athens, Athens, Greece

Bibliografia

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• [2] E. Villermaux, B. Bossa, Single‐drop fragmentation determines size distribution of raindrops, Nature Physics, 2009.
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• [4] R.A. Nelson, Rain How it Affects the Communications Link, Applied Technology Institute, 2000
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• [7] Recommendation ITU‐R P.1815‐1, 2009, Differential rain attenuation.
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• [19] R. Crane, Electromagnetic Wave Propagation through Rain, Wiley, 1996
• [20] Recommendation ITU‐R P.453‐10, The Radio refractive index: its formula and refractivity data, 2012
• [21] E.A. Karagianni, A.P. Mitropoulos, A.G. Kavousanos‐ Kavousanakis, J.A. Koukos and M.E. Fafalios, Atmospheric Effects on EM Propagation and Weather Effects on the Performance of a Dual Band Antenna for WLAN Communications, Nausivios Chora, Volume 5, 2015, in press.
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• [23] Recommendation ITU‐R P.837‐6, Characteristics of precipitation for propagation modeling, 2012.
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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.