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Subject: search.filters.subject.Yearly cumulative distribution function

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    Rainfall rate and rain attenuation in Ku-Band satellite signal in Thailand and Laos
    (2006-12-01)
    Lakanchanh, Donekeo
    ;
    Datsong, Attasit
    ;
    Leelaruji, Nipha
    ;
    Hemmakorn, Narong
    This paper describes the experiment of rainfall rate and rain attenuation. One year measurement of rainfall rate and rain attenuation of satellite signal on Ku Band, downlink of Thaicom 3 at King Mongkut's Institute of Technology Ladkrabang (KMITL) in Bangkok using 0.5 meter antenna with horizontal polarized and measurement of rainfall rate at National University of Laos (NUOL) in Vientiane and at Paksong in the southern of Laos are investigated, The relation of rainfall rate and rain attenuation on three ground stations are presented. Correlation between rainfall rate and cumulative time are described in monthly and yearly include the comparison of yearly cumulative rainfall rate between measurement and ITU-R model are presented. © 2006 ICASE.
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    The rain attenuation in Ku-band satellite signal at Bangkok
    (2005-12-01)
    Datsong, Attasit
    ;
    Hemmakorn, Narong
    ;
    Leelaruji, Nipha
    This paper presents the experiment and result of rain attenuation of satellite signal on Ku-band, downlink of Thaicom 3 at King Mongkut's Institute of Technology Ladkrabang (KMITL) in Bangkok (Longitude: 100.7 °E, Latitude: 13.7 °N). The relation of rainfall and the rain attenuation on ground station are presented. Correlation between 1-second, 1-minute and 30-minute integration time of the rainfall rate is also presented. We compare the data recorded at Bangkok with ITU-R model. This experiment has been held for 1 year from June 2004 to May 2005. © 2005 IEEE.
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    Rain attenuation of satellite link in Ku-band at Bangkok
    (2005-12-01)
    Boonchuk, T.
    ;
    Hemmakorn, N.
    ;
    Supnithi, P.
    ;
    Iida, M.
    ;
    Tanaka, K.
    Rain attenuation is a major factor to degrade the system performance in a frequency above 10 GHz. This paper presents a statistical analysis of the rainfall rate and the rain attenuation data on satellite to ground propagation path. By measuring 12.7-GHz beacon signal attenuation from JCSAT satellite and the rainfall rate continuously. Yearly cumulative distribution functions were then compared to predicted models. The Crane Global model for the rain zone H provides overestimated predicted values to the measured ones. For the rain zone G, the Crane Global model provides close values to ITU-R model; both are smaller than the measured ones. © 2005 IEEE.