Effects of wind velocity on slant path rain-attenuation for satellite application in Malaysia

Lwas, Ali Kadhim and Islam, Md. Rafiqul and Habaebi, Mohamed Hadi and Mandeep, Singh Jit and Ismail, Ahmad Fadzil and Zyoud, Al-Hareth (2015) Effects of wind velocity on slant path rain-attenuation for satellite application in Malaysia. Acta Astronautica, 117. pp. 402-407. ISSN 0094-5765 E-ISSN 1879-2030

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Abstract

Earth-to-satellite signals suffer by Earth׳s atmosphere especially by precipitations. It is more severe in tropical climate. A reliable technique named as synthetic storm technique (SST) was proposed to predict the effects of rain on slant path. SST model uses rainfall-rate time series, velocity of wind in storm, effective length, altitude of site, and elevation angle as the main input parameters. SST was developed based on data collected from temperate regions. Since the rainfall characteristics in temperate regions differ considerably from that in tropical regions. This paper presents storm-speed effects on rain-attenuation prediction using SST based on storm speed, rain rate, and attenuation at Ku-band measurement in Malaysia. The predicted rain attenuation by SST highly overestimates for higher values of storm speed but the predicted duration is close to measurement. For lower values of storm speed, the prediction comes closer to measurement, but the duration extends much longer than the measurement. Hence, predicted rain-attenuation as a function of storm-speed variations by SST is not accurate in tropical regions.

Item Type:	Article (Journal)
Additional Information:	3802/44968
Uncontrolled Keywords:	Rain attenuation Earth-to-satellite propagation Storm speed Synthetic storm technique
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr. Mohamed Hadi Habaebi
Date Deposited:	07 Oct 2015 09:02
Last Modified:	31 Oct 2017 09:54
URI:	http://irep.iium.edu.my/id/eprint/44968

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