Journal is indexed in following databases:
- SCOPUS
- Web of Science Core Collection - Journal Citation Reports
- EBSCOhost
- Directory of Open Access Journals
- TRID Database - Transportation Research Board
- Index Copernicus Journals Master List
- BazTech
- Google Scholar
2023 Journal Impact Factor - 0.7
2023 CiteScore - 1.4
ISSN 2083-6473
ISSN 2083-6481 (electronic version)
Editor-in-Chief
Associate Editor
Prof. Tomasz Neumann
Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
e-mail transnav@umg.edu.pl
Maximum Rain-Rate Evaluations in Aegean Archipelagos Hellas for Rain Attenuation Modeling at Microwave Frequencies
1 Hellenic Naval Academy, Pireus, Greece
2 Hellenic National Meteorological Service, Eliniko, Greece
3 National and Kapodistrian University of Athens, Athens, Greece
2 Hellenic National Meteorological Service, Eliniko, Greece
3 National and Kapodistrian University of Athens, Athens, Greece
ABSTRACT: 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.
KEYWORDS: Radar Equipment, Hydrometeorological Conditions, Aegean Archipelagos, Rain Attenuation Modeling, Microwave Frequencies, Rain-Rate Evaluations, Microwaves, Signal Propagation
REFERENCES
W.-Y. Chang, T.-C. C. Wang, P.-L. Lin, The Characteristics of Raindrop Size Distribution and Drop Shape Relation in Typhoon Systems from 2D-Video Disdrometer and NCU C-Band Polarimetric Radar, Journal of Atmospheric and Oceanic Technology, vol. 26, 2009
E. Villermaux, B. Bossa, Single-drop fragmentation determines size distribution of raindrops, Nature Physics, 2009.
J.S. Marshall, W.M. Palmer, The distribution of raindrops with size, Journal of Meteorology, 5, 1948.
R.A. Nelson, Rain How it Affects the Communications Link, Applied Technology Institute, 2000
O. N. Okoro, G. A. Agbo, J. E. Ekpe and T. N. Obiekezie, Comparison of hourly variations of radio refractivity for quiet and disturbed days during dry and rainy seasons at Minna, International Journal of Basic and Applied Sciences, vol. 2, 2013
Recommendation ITU-R P.1815-1, 2009, Differential rain attenuation.
M. Tamošiūnaitė, S. Tamošiūnas V. Daukšas M. Tamošiūnienė M. Žilinskas, Prediction of Electromagnetic Waves Attenuation due to Rain in the Localities of Lithuania, Electronics and Electrical Engeneering, No. 9, 2010.
A. M. Burgueno, M. Puigcever, and E. Vilar, Influence of rain gauge integration time on the rain rate statistics used in microwave communication, Ann. Telecomm., Vol. 43, No. 9-10, 1988.
P. A. Owolawi, Rainfall Rate Probability Density Evaluation and Mapping for the Estimation of Rain Attenuation in South Africa and Surrounding Islands, Progress In Electromagnetics Research, Vol. 112, 2011
J. M. Gomez, Satellite Broadcast Systems Engineering, Artech House, 2002
Recommendation ITU-R P.838-3, Specific attenuation model for rain for use in prediction methods, 2005
R. L. Freeman, Radio systems design for telecommunication, Wiley, 2007
F. Moupfouma, L. Martin, Modelling of the rainfall rate cumulative distribution for the design of satellite and terrestrial communication systems, International Journal of Satellite Communications and Networking, v.13, 1995.
Recommendation ITU-R P.618-11, Propagation data and prediction methods required for the design of Earth-space telecommunication systems, 2013
Recommendation ITU-R P.676-10, Attenuation by atmospheric gases, 2013
R. Uijlenhoet, Raindrop size distributions and radar reflectivity–rain rate relationships for radar hydrology, Hydrology and Earth System Sciences, vol. 5, 2001.
R. Crane, Electromagnetic Wave Propagation through Rain, Wiley, 1996
Recommendation ITU-R P.453-10, The Radio refractive index: its formula and refractivity data, 2012
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.
A. D. Papatsoris, K. Polimeris, I. Sklari, A. A. Lazou, Rainfall Characteristics for Radiowave Propagation Studies in Greece, IEEE Antennas and Propagation Society International Symposium, 2008.
Recommendation ITU-R P.837-6, Characteristics of precipitation for propagation modeling, 2012.
J. W. Weatherly and D. R. Hill, The Impact of Climate and Extreme Weather Events on Military Operations, ADA432260, 2004
Citation note:
Karagianni E.A., Vazouras C.N., Papageorgiou E.H., Sarantopoulos A.D., Nistazakis H.E.: Maximum Rain-Rate Evaluations in Aegean Archipelagos Hellas for Rain Attenuation Modeling at Microwave Frequencies. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 10, No. 1, doi:10.12716/1001.10.01.13, pp. 117-123, 2016
File downloaded 930 times
