FREQUENCY SCALING OF RAIN ATTENUATION FOR SATELLITE COMMUNICATION LINKS

One year of copolarized signal data from the OLYMPUS satellite's 12, 2 0, and 30 GHz beacons were examined for frequency scaling of attenuati on, The statistics of the ratios of attenuation in dB for the frequenc y pairs 30/20, 20/12, and 30/12 GHz computed at each O.1s-sample insta nt were found to be nearly independent of fade depth. It was found tha t attenuation in dB scales with frequency to the 1.9 power, Also, atte nuation ratios computed from the separate statistics of attenuation at each frequency for the same level of occurrence are very close to tho se found from instantaneous attenuation ratios.