Atmospheric Attenuation Analysis Using Aldo-Alphasat Beacon Signal in Prague

Abstract

In this contribution we describe selected attenuation events recorded by the "Alphasat" satellite receiver at the Institute of Atmospheric Physics (IAP) in Prague. First of all we compare the attenuation course and the rain rate course - good correlation was acknowledged. Also the cumulative distribution of attenuation for September 2015 and more months together (September - June, 2016) is demonstrated. Some selected rain attenuation prediction methods were used to compare measured and computed attenuation which is, in fact, caused by rain mainly. We added frequency scaling description and test of the ITU-R scaling method of quite good result related to peak attenuation values.