Cumulative distribution function of the attenuation caused by the rain over a length of 9.5 km at 11 and 17.8 GHz
Abstract
Two experiments with vertical polarization and one with horizontal polarization were performed through 120 rain events between 1974 and 1977. It is shown that the attenuation due to rain increases with frequency and is larger for horizontal polarization. It is also concluded that several years of observation are needed to define with statistical significance the attenuation for time fractions below 30 minutes per year. The relationship between the Q factor and the time fraction is described, showing that this relationship is independent of the frequency or polarization.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 December 1978
 Bibcode:
 1978STIN...8028616F
 Keywords:

 Communication Networks;
 Frequency Distribution;
 Microwave Attenuation;
 Rain;
 Atmospheric Attenuation;
 Millimeter Waves;
 Polarized Radiation;
 Q Factors;
 Significance;
 Time Functions;
 Communications and Radar