00000nam 2200000zi 4500 9.894469 CaOODSP 20250107144055 m o d f cr bn||||||||| 201208t19861986oncab obs f000 0 eng d 0662151097 (print) CaOODSP eng rda CaOODSP n-cn--- x7x7 Co24-3/7-1400-1986E-PDF Co24-3/2-1400E Webber, R. V., author. Statistics of attenuation by rain of 13 GHz signals on earth-space paths in Canada / by R.V. Webber, J.I. Strickland and J.J. Schlesak. Ottawa : Communications Research Centre, 1986. ©1986 1 online resource (ii, 43 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC report ; no. 1400 Issued also in French under title: Statistiques de l'affaiblissement par la pluie des signaux 13 GHz sur les trajets Terre-espace au Canada. "Radar and Communications Technology Branch." "Ottawa, April 1986." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references (page 43). "To accommodate the increased number of users of radio signals, communications systems are being designed more and more to operate at microwave frequencies that have hitherto been unused. A major difficulty with frequencies above 10 GHz is that they are attenuated by rain. To meet the reliability specifications of a satellite communication system that is to operate at these frequencies, a designer must be able to estimate the fractions of time in an average year, or in an average worst month, for which given attenuations will be exceeded on an earth-space path. These estimates are based on the measured attenuation statistics that are available from various locations around the world. Also, a knowledge of the fade rate statistics for these paths is necessary if the effect of the attenuation is to be overcome by up-link power control or site diversity arrangements. This report presents attenuation statistics and fade rate statistics from six new locations, all in Canada, for 13 GHz signals on earth-space paths. These statistics are based on a total of 15.7 station-years of attenuation measurements with the operating times of the individual stations ranging from 1.68 years to 4.91 years. The operating time of 4.91 years is among the longest that have been reported for the monitoring by radiometer of a single earth-space path"--Introduction, page 1. Issued also in print format. Microwaves Attenuation Canada Statistics. Radio Transmitters and transmission Fading Canada Statistics. Rain and rainfall Canada. Statistics lcgft Communications Research Centre (Canada), issuing body. Statistiques de l'affaiblissement par la pluie des signaux 13 GHz sur les trajets Terre-espace au Canada / (CaOODSP)9.894473 CRC report ; no. 1400. (CaOODSP)9.882492 PDF 1.30 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-7-1400-1986-eng.pdf