Worst month statistics of attenuation and XPD on earthspace path
Abstract
The establishment of a reliable space communication system operating at frequencies above 10 GHz must be based on detailed knowledge of attenuation and crosspolarization discrimination (XPD) characteristics along earthspace path in these frequency bands. In some cases, the attenuation and XPD statistics of the worst month is needed. This paper provides a description of the worst month statistics of attenuation and and XPD regarding an earthspace path at 11.7 GHz (vertical polarization with a tilt angle of about 5 deg) and 19.5 GHz (circular polarization). It is found that the probability relation between the annual and worst month statistics is approximated by the powerlaw relation. The relations are independent of frequency and polarization.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 April 1985
 DOI:
 10.1109/TAP.1985.1143600
 Bibcode:
 1985ITAP...33..390F
 Keywords:

 Atmospheric Attenuation;
 Cross Polarization;
 Microwave Attenuation;
 Polarization Characteristics;
 Satellite Transmission;
 Statistical Distributions;
 Downlinking;
 Least Squares Method;
 Mathematical Models;
 Probability Theory;
 Space Communication;
 Uplinking;
 Communications and Radar