Rainfall measurements at Ku-band satellite link in Penang, Malaysia

2008 ◽  
Vol 2 (2) ◽  
pp. 147-151 ◽  
Author(s):  
J.S. Mandeep ◽  
S.I.S. Hassan ◽  
K. Tanaka
Keyword(s):  
Author(s):  
Hassan Dao ◽  
Islam Md. Rafiqul ◽  
Megat Farez Azril Zuhairi ◽  
Megat Norulazmi Megat Mohamed Noor ◽  
Sayed Aziz Sayed Hussin

2013 ◽  
Vol 31 (1) ◽  
pp. 61
Author(s):  
V. Ramachandran ◽  
Ashneel Prasad

Dependence of radio wave attenuation by cloud water content has been investigated by analyzing simultaneous records of the strength of Ku-band satellite downlink and 'insolation'. Preliminary analysis suggests that with increasing cloud coverage in the satellite downlink path, the cloud induced attenuation also increases. The cloud attenuation showed a logarithmic dependence on reduction in insolation. In Fiji, a tropical island country, the maximum attenuation of Ku-band signals by cloud was ~ 11%.


2000 ◽  
Vol 36 (10) ◽  
pp. 894 ◽  
Author(s):  
K.I. Timothy ◽  
J.T. Ong ◽  
E.B.L. Choo

2000 ◽  
Vol 36 (9) ◽  
pp. 841 ◽  
Author(s):  
Q.W. Pan ◽  
J.E. Allnutt ◽  
F. Haidara

2003 ◽  
Vol 21 (1) ◽  
pp. 59
Author(s):  
Visagaperuman Ramachandran ◽  
Vickal Kumar

A four-month study of the attenuation measurement on satellite TV transmission down link is reported. The time percentage distributions of the attenuation show a fairly large month-to month variation. However, such variations seem to be closely related to the variation of the rain-rate distribution. Comparison of exceedance and the cumulative rainfall during these four months with those of the ten -year data indicates a similar variation this year. Measurements on a ?cloudy? day without any rain indicate that the attenuation by cloud is small.


Author(s):  
T. Boonchuk ◽  
N. Hemmakorn ◽  
P. Supnithi ◽  
M. Iida ◽  
K. Tanaka ◽  
...  

2020 ◽  
Vol 39 (1) ◽  
pp. 238-245
Author(s):  
A.O. Gbenga-Ilori

With the rapid deployment of free-to-air satellite television, there is an increasing need for an accurate propagation prediction tool for satellite link planning. This paper presents an evaluation of deterministic propagation model that is best for the analysis of satellite signal quality at Ku-band in Lagos state, Nigeria. The paper aims at comparing accurate measurements of channel-to-noise (C/N0) and bit error rate (BER) taken at six locations within Lagos state with simulation results derived from the Institut für Rundfunktechnik (IRT) model and modified irregular terrain model (ITM) deterministic propagation models. The work considered the effect of the type of modulation scheme and error correction code used on the C/N0 and BER received using these deterministic propagation models. Results show a deviation of 0.732 dB and 0.285 dB from C/No measurements using the IRT and modified ITM models respectively. This work shows that at more than 1% of the time, both models performed well when compared with measurements. However, at less than 1% of the time, which accounts for periods of heavy rainfall, the modified ITM model performed better. The paper also shows that when error correction code is not used with the modulation scheme deployed, the BER increases rapidly and the effect of using a higher alternate modulation symbol is not evident on achievable data rates. Keywords: Bit error rate, deterministic propagation models, Ku-band, satellite link planning


2008 ◽  
Vol 113 (D5) ◽  
pp. n/a-n/a ◽  
Author(s):  
J. S. Mandeep ◽  
S. I. S. Hassan ◽  
K. Tanaka

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