Prediction of scintillation intensity from sky-noise temperature in Earth-satellite links

1998 ◽  
Vol 34 (10) ◽  
pp. 1023 ◽  
Author(s):  
B. Belloul ◽  
S. Saunders ◽  
B. Evans
Keyword(s):  
Noise Temperature ◽  
Earth Satellite ◽  
Satellite Links

Potential of combined spaceborne infrared and microwave radiometry for near real-time rainfall attenuation monitoring along earth-satellite links

2001 ◽  
Vol 19 (4) ◽  
pp. 385-412 ◽  
Author(s):  
Frank S. Marzano ◽  
Joseph F. Turk ◽  
Piero Ciotti ◽  
Sabatino Di Michele ◽  
Nazzareno Pierdicca
Keyword(s):  
Real Time ◽  
Earth Satellite ◽  
Microwave Radiometry ◽  
Satellite Links ◽  
Rainfall Attenuation

Scintillation effects on total fade distributions for Earth-satellite links

1996 ◽  
Vol 44 (1) ◽  
pp. 23-27 ◽  
Author(s):  
E.T. Salonen ◽  
J.K. Tervonen ◽  
W.J. Vogel
Keyword(s):  
Earth Satellite ◽  
Satellite Links

Feasibility analysis of opto-electronic THz Earth-satellite links in the low- and mid-latitude regions

2019 ◽  
Vol 58 (25) ◽  
pp. 6762 ◽  
Author(s):  
Muhammad Saqlain ◽  
Nazar Muhammad Idrees ◽  
Xiaoxiao Cao ◽  
Xiang Gao ◽  
Xianbin Yu
Keyword(s):  
Earth Satellite ◽  
Feasibility Analysis ◽  
Satellite Links

scholarly journals Disparities in the Induced Rain Attenuation between Beacon (Narrowband) and Broadband Satellite Links in Tropical Zones

2018 ◽  
Vol 10 (2) ◽  
pp. 687
Author(s):  
Idrissa Abubakar ◽  
Jafri Din ◽  
Hong Yin Lam
Keyword(s):  
Earth Satellite ◽  
Rain Attenuation ◽  
Modulation Scheme ◽  
Atmospheric Conditions ◽  
Band Frequency ◽  
Link Performance ◽  
Satellite Links ◽  
Broadband Signal ◽  
Rain Events ◽  
Sky Conditions

<span lang="EN-GB">The utilisation of higher frequency bands above 10 GHz by the satellite industries to provide the bandwidth (BW) required for broadband multimedia services, video conferencing, direct-to-home TV programmes and IP data requires the understanding of atmospheric losses and good link planning for satellite-to-earth links. The trade-off between the service availability, data rate and BW determine the type of modulation scheme and error corrections to be employed. These services also depend on the link performance under adverse atmospheric conditions, especially rain-induced attenuation. In this research, study measurements were conducted on space-to-earth satellite links using the beacon narrowband and broadband IP carrier signals of a Nigcomsat-1R satellite operating at 42.5°E. A VSAT receiving terminal at a latitude of 7.4°N, longitude of 9.04°E and altitude of 334 m above sea level was utilised to quantify the rain-induced attenuation of both the beacon and broadband signals during rain events. The measurements were then compared with the link performance under clear sky conditions. The performance revealed that, when compared with the broadband signal, the induced rain attenuation on beacon signal presented a disparity in the responses, resulting in significant variations of 10.14 dB in the carrier-to-noise ratio (C/N) and 17.42 dB in the received signal level at a Ku-band frequency of 12.518 GHz. These observations were also compared with the Crane global rain map and ITU-R P.618-12. Both models disagreed with the measurement values for Abuja, Nigeria.</span>

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