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Khamphoui SOUTHISOMBATH Toshio WAKABAYASHI Yoshiaki MORIYA
The measurement results of clear sky attenuation on an earth-satellite path at frequency Ku band in Laos are described. The measurement results show that diurnal clear sky noise vary with respect to humidity characteristics, which is a significant value in the early morning while low at daytime. The mean difference in variation is about 0.7 dB.