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. : Co24-3/7-1400-1986E-PDF

"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.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.894469&sl=1

• Format MARC XML
• Format MARC HTML

Demander des formats alternatifs