RECOMMENDATION ITU-R S.1340*,** - Sharing between feeder links for the mobile-satellite service and the ... ANNEX 1 - Aeronautical radionavigation systems in the 15.4-15.7 GHz band 1 Surface based radars (SBR) 1.1 Antenna patterns 1.2 Other characteristics 2 Aircraft landing systems (ALS) 2.1 Surface based station antenna patterns 2.2 Other characteristics 3 Aircraft multipurpose radars (MPR) 3.1 Antenna patterns 3.2 Other characteristics 4 Radar sensing and measurement system (RSMS) 4.1 RSMS characteristics ANNEX 2 - Emission criteria for the aeronautical radionavigation service and sharing feasibility with ... 1 Introduction 2 Characteristics of aeronautical radionavigation systems 3 Analyses 3.1 Pulsed interference into digital carriers 3.2 Emission limits on aeronautical radionavigation stations 3.3 Impact on feeder link up path e.i.r.p. 4 Summary ANNEX 3 - Coordination distances between feeder-link earth stations in the MSS operating in the Earth-to-space ... 1 Aeronautical radionavigation system characteristics 2 Coordination distances 2.1 Analyses 2.2 Computed coordination distances 2.3 Reduction of earth station limits 3 Summary 4 Mitigation factors for reducing the separation distance within the coordination distance