Proceedings ArticleDOI
Rain attenuation prediction at 6.75 GHz in Malaysia using rain gauge and radiometer measurements
A. Yagasena,S.I.S. Hassan,M.M.M. Yusoff +2 more
- pp 596-599
Reads0
Chats0
TLDR
The attenuation derived from radiometer measurements gives a higher value of attenuation compared to rain gauge measurements and it was found that at for 0.01% of the time, the rain rate is lower than that given by the ITU (formerly CCIR) for P region climate.Abstract:
Attenuation due to rain is an important constraint in microwave radio link design especially at frequencies above 10 GHz in temperate climates. However, it has been shown in some literature that rain also plays an important role in radio signal attenuation below 10 GHz in tropical and equatorial climates which experience higher precipitation rates. Due to the scarcity of rain attenuation data for the tropical region, a definitive attenuation model can only be derived from long term data collection in this region. In this paper, the results of two years rain rate data and six months radiometer data are presented. The rain data is measured using a tipping bucket type (0.5 mm) rain gauge with one minute integration time. The radiometer data were taken for 45 and 90 degrees elevation using a dual channel unbalanced Dicke radiometer. Both the rain gauge and radiometer data were analysed in event and statistical terms. The attenuation derived from radiometer measurements gives a higher value of attenuation compared to rain gauge measurements. It was also found that at for 0.01% of the time, the rain rate is lower than that given by the ITU (formerly CCIR) for P region climate.read more
Citations
More filters
Journal ArticleDOI
Real Measurement Study for Rain Rate and Rain Attenuation Conducted Over 26 GHz Microwave 5G Link System in Malaysia
TL;DR: The statistics for the worst month in Malaysia is lower than what was predicted by the ITU model, and the average percentage of error calculated between the measurements and predicted results for the rain rate and rain attenuation were 143% and 159%, respectively.
Journal ArticleDOI
Review of Rain Attenuation Studies in Tropical and Equatorial Regions in Malaysia: An Overview
TL;DR: In this article, rain attenuation was directly measured at different frequencies for terrestrial and Earth-to-satellite links, in order to investigate prediction models, and the reduction factor and frequency scaling were investigated and proposed to predict total attenuation.
Journal ArticleDOI
Rain attenuation and worst month statistics verification and modeling for 5G radio link system at 26 GHz in Malaysia
Ibraheem Shayea,Liyth Nissirat,Mahdi A. Nisirat,Aida Al-Samawi,Tharek Abd Rahman,Marwan Hadri Azmi,Mohammad Abo-Zeed,Issam Trrad +7 more
Journal ArticleDOI
Validation of New ITU-R Rain Attenuation Prediction Model over Malaysia Equatorial Region
TL;DR: In this article, the results of rain attenuation measurement using radar data collected from MMD and DIDM, Malaysia were compared with newly improved ITU-R P530-16 and four other selected tropical rainfall attenuation prediction models.
Proceedings ArticleDOI
Worst-month rain attenuation statistics for satellite-Earth link design at Ku-band in Malaysia
A. Yagasena,S.I.S. Hassan +1 more
TL;DR: In this paper, the worst-month analysis for rain attenuation and rain rate is presented, and the probability relation between the annual and worst-months statistics follows a power law relation.
References
More filters
Journal ArticleDOI
11·6 GHz rain attenuation measurements in Peru
TL;DR: In this paper, the results of a Ku-band propagation experiment conducted in a high-rainfall-rate region in Peru were presented in the form of long-term distributions of rain rate and path attenuation.
Proceedings ArticleDOI
Rain attenuation measurements at 6.75 GHz in Malaysia
TL;DR: Investigation of several events shows that the rain rate is not uniform over a short distance (3 km) especially at high rain rates, and comparison of rain rates and attenuation with the International Radio Consultative Committee (CCIR) proposed model shows discrepancy especially at low percentages of time.
Related Papers (5)
Propagation study of microwave signals based on rain attenuation data at 26 GHz and 38 GHz measured in Malaysia
Md. Rafiqul Islam,A.R. Tharek +1 more