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Yearly variations of rain-rate statistics at Wallops Island and their impact on modeled slant path attenuation distributions

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1 Author(s)
Goldhirsh, J. ; Applied Physics Lab., Johns Hopkins Univ., Laurel, MD, USA

Rain gauge measurements at Wallops Island, VA over a five-year period have been reduced and cumulative rain-date distributions have been determined for yearly, successively combined years, and overall average cases. Yearly variations of the predicted slant path attenuation statistics for two International Radio Consultative Committee (CCIR) models (referred to as modified method I and method II) and the global model at 28.56 GHz were calculated using the yearly measured rain rates at Wallops Island. This frequency was selected as it coincided with the beacon frequency of the COMSTAR geostationary satellite which was also simultaneously monitored at Wallops Island for a period of three years enabling a comparison with the measured rain-fade statistics. The year to year variations of the predicted fades as well as the percent deviations relative to the five-year average case were examined.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:31 ,  Issue: 6 )