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Joint Results of Long-Term Earth-Space Propagation Eexperiments at 20-GHz in Canada and Europe

Amaya, C. A ; Nguyen, T.Ngu ; Rocha, A. ; Riera, J. M. R. ; Benarroch, A. Benarroch ; Garcia-del-Pino, P. G. ; Garcia-Rúbia, J. M. R

Joint Results of Long-Term Earth-Space Propagation Eexperiments at 20-GHz in Canada and Europe, Proc ESA Propagation Workshop - Radiowave Propagation Modelling and Measurements for SatCom and SatNav Systems, Noordwijk, Netherlands, Vol. *, pp. * - *, November, 2011.

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Abstract
Propagation effects such as rain attenuation or the influence of clouds cause deeper fades in the Ka-band than at lower frequencies. In this collaborative paper, the main results of four long-term Ka-band propagation campaigns are presented. The experiments are carried out in Ottawa, Canada (satellite Anik F2); Aveiro, Portugal; Madrid, Spain; and Toulouse, France (satellite HotBird 6 in the last three cases) and have been running since 2004 in Aveiro, 2006 in Ottawa and Madrid, and 2008 in Toulouse, with only short service interruptions. After a brief introduction of the experiments, rain rate and excess attenuation results are discussed, first for a common measurement period and later for the whole database available. Seasonal attenuation statistics for Ottawa and Aveiro are compared. Finally, fade duration and fade slope statistics derived at three locations are presented and discussed.