Atmospheric influences on satellite communications

• Autorzy: Zubair M. , Haider Z. , Khan S. , Nasir J.

Warianty tytułu

PL

Wpływ atmosfery na jakość komunikacji satelitarnej

• Języki publikacji: EN

Abstrakty

EN

Among other atmospheric regions, ionosphere, which is ionized region of the atmosphere, is considered to impose serious limitations on satellite communication. At higher frequencies, radio waves pass through the ionosphere and are attenuated due to the free electrons present in ionosphere. This paper discusses atmospheric effects on high frequency radio waves illustrating the attenuation and losses it may come across like attenuation due to atmospheric gases, rain, clouds, beam spreading loss and noise temperature. Data used to summarize the influence of atmospheric phenomena is obtained from ITU-R models and processed using MATLAB.

PL

Spośród różnych warstw atmosfery szczególnie jonosfera wpływa niekorzystnie na komunikację za pośrednictwem satelitów. Przy wyższych częstotliwościach fale radiowe są silnie tłumione w jonosferze. Artykuł przedstawia analizę wpływu czynników atmosferycznych w jonosferze na tłumienie i straty w radiowej komunikacji wysokoczęstotliwościowej.

Słowa kluczowe

EN

radio propagation; ionosphere; Rain attenuation; cross polar discrimination

PL

propagacja fal radiowych; komunikacja satelitarna

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 5
• Strony: 261--264
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Zubair M.

autor

Haider Z.

autor

Khan S.

autor

Nasir J.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Park Road, Islamabad Islamabad.,

Bibliografia

• [1] Martin Hall, Les Barclay, Propagation of Radiowaves, 2nd edition, The Institute of Electrical Engineers, London, UK.
• [2] ITU-R Recommendation P.676-5, Attenuation by atmospheric gases, 2001.
• [3] ITU-R Recommendation P.618-7, Propagation data and prediction methods required for the design of Earth-space telecommunication systems, 2001.
• [4] ITU-R Recommendation P.834-4, Effects of tropospheric refraction on radiowave propagation, 2003.
• [5] ITU-R Recommendation P.837-5, Characteristic of precipitation for propagation modeling, 2007.
• [6] Dong Y. Choi, Rain attenuation prediction model by using the 1-hour rain rate without 1-minute rain rate conversion, IJCSNS International Journal of Comp. Science and Network Security, March 2006, Vol. 6 No. 3A.
• [7] ITU-R Recommendation, P.618-8, Propagation data and prediction methods required for the design of Earth-space telecommunication systems, 2003.
• [8] Glen Feldhake, Estimating the attenuation due to Combined Atmospheric Effects on Modern Earth-Space Paths, IEEE Antennas and Propagation Magazine, August 1997, Vol. 39, No. 4.
• [9] CCIR, Report 719, Attenuation by atmospheric gases, Recommendations and reports to the CCIR, 1978, Vol. 5, pp. 97-102.
• [10] Hany E. Green, Propagation Impairment on Ka-band SATCOM links in Tropical and Equatorial Regions, IEEE Antennas and Propagation Magazine, April 2004, Vol. 46, No.2.
• [11] Shkelzen C., Kresimir M., Rain Attenuation at Low Earth Orbiting Satellite Ground Station, Presented in 48th International symposium ELMAR-2006, 07-09 June 2006, Zadar, Croatia.
• [12] ITU-R Recommendation P. 838-1, Specific Atteuation model for Rain for use in Prediction Methods, Geneva, 1992.
• [13] Louis J. Appolito, Radio Propagation for Space Communication Systems, In Proceedings of the IEEE, June 1981, Vol. 69, No. 6.
• [14] T. S. Chu, Rain Induced Cross-polarization at centimeter and millimeter wavelengths, Bell. Sys. Tech. J., Oct. 1974, Vol. 53, no.8, pp. 1557-1579.