scholarly journals DYNAMIC PROPERTIES OF RAIN ATTENUATION IN ATHENS, GREECE: SLANT PATH RAIN ATTENUATION SYNTHESIZER AND DYNAMIC DIVERSITY GAIN

2015 ◽  
Vol 41 ◽  
pp. 43-50 ◽  
Author(s):  
Charilaos I. Kourogiorgas ◽  
Athanasios D. Panagopoulos ◽  
Spiros N. Livieratos ◽  
George E. Chatzarakis
Keyword(s):  
Dynamic Properties ◽  
Rain Attenuation ◽  
Diversity Gain ◽  
Slant Path

scholarly journals Analysis of Time Diversity Gain for Satellite Communication Link based on Ku-Band Rain Attenuation Data Measured in Malaysia

2018 ◽  
Vol 8 (4) ◽  
pp. 2608
Author(s):  
Islam Md. Rafiqul ◽  
Ali Kadhim Lwas ◽  
Mohamed Hadi Habaebi ◽  
Md Moktarul Alam ◽  
Jalel Chebil ◽  
...  
Keyword(s):  
Satellite Communication ◽  
Satellite Communications ◽  
Earth Satellite ◽  
Rain Attenuation ◽  
Diversity Gain ◽  
Communication Link ◽  
Time Diversity ◽  
Communication Links ◽  
System Time ◽  
Diversity Technique

<p><span>This paper reports a study on mitigation of propagation impairments on Earth–space communication links. The study uses time diversity as a technique for mitigating rain propagation impairment in order to rectify rain fade. Rain attenuation time series along earth-to-satellite link were measured for two years period at 12.255 GHz in Malaysia. The time diversity technique was applied on measured rain fade to investigate the level of possible improvement in system. Time diversity gain from measured one-minute rain attenuation for two years period was estimated and significant improvement was observed with different delays of time. These findings will be utilized as a useful tool for link designers to apply time diversity as a rain fade mitigation technique in Earth-satellite communications systems.</span></p>

scholarly journals Application of Synthetic Storm Technique for Diurnal and Seasonal Variation of Slant Path Ka-Band Rain Attenuation Time Series over a Subtropical Location in South Africa

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
J. S. Ojo ◽  
P. A. Owolawi
Keyword(s):  
South Africa ◽  
Time Series ◽  
Seasonal Variation ◽  
Diurnal Variation ◽  
Rain Rate ◽  
Rain Attenuation ◽  
Series Data ◽  
Band Frequency ◽  
Ka Band ◽  
Slant Path

As technology advances and more demands are on satellite services, rain-induced attenuation still creates one of the most damaging effects of the atmosphere on the quality of radio communication signals, especially those operating above 10 GHz. System designers therefore require statistical information on rain-induced attenuation over the coverage area in order to determine the appropriate transmitter and receiver characteristics to be adopted. This paper presents results on the time-varying rain characterization and diurnal variation of slant path rain attenuation in the Ka-band frequency simulated with synthetic storm techniques over a subtropical location in South Africa using 10-year rain rate time-series data. The analysis is based on the CDF of one-minute rain rate; time-series seasonal variation of rain rate observed over four time intervals: 00:00–06:00, 06:00–12:00, 12:00–18:00, and 18:00–24:00; diurnal fades margin; and diurnal variation of rain attenuation. Comparison was also made between the synthesized values and measured attenuation data. The predicted statistics are in good agreement with those obtained from the propagation beacon measurement in the area. The overall results will be needed for an acceptable planning that can effectively reduce the fade margin to a very low value for an optimum data communication over this area.

Annual and Diurnal Slant Path Rain Attenuation Statistics in Athens Obtained With the Synthetic Storm Technique

2006 ◽  
Vol 54 (8) ◽  
pp. 2357-2364 ◽  
Author(s):  
S.A. Kanellopoulos ◽  
A.D. Panagopoulos ◽  
E. Matricciani ◽  
J.D. Kanellopoulos
Keyword(s):  
Rain Attenuation ◽  
Slant Path
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