The 94GHZ Propagation Facility at the Ypenburg Airfield and the First Experimental Results

摘要

Attenuation at 94 GHz caused by rain was investigated for vertical polarization on a 935 m link, with four rapid response rain gages and a distrometer. The measured and the theoretically predicted rain attenuation derived from the actually measured raindrop size distribution are compared. The decrease of antenna gain at 94 GHz due to water on a 1.2 m Cassegrain antenna is discussed. It is demonstrated that for accurate propagation measurements it is necessary to equip the antennas with protective shelters.