RECOMMENDATION ITU-R S.1526 - Definition of a non-geostationary-satellite orbit fixed-satellite service ... ANNEX 1 - Methodology to assess the interference environment created by a non-GSO FSS system 1 Introduction 2 Example: Impact of modifications to LEOSAT-1 on USAMEO-1 2.1 LEOSAT-1 system parameters and assumptions 2.2 USAMEO-1 system parameters and assumptions 2.3 Simulation results ANNEX 2 - Rain degradation modelling for convolutions 1 Introduction 2 Rain fade and rain degradation relationship in downlink 3 Rain fade and rain degradation relationship in uplink 4 Power control modelling