Modelling of land mobile satellite channels based on measurements at 13° and 29° elevation angle

This paper presents results from land mobile propagation measurements conducted by Inmarsat at 13° and 29° elevation angles in the UK. A number of simultaneous recordings have been made at L-band, using both directive and omnidirectional antennas. The measurements took place in the suburbs of London in a variety of propagation environments ranging from open to shadowed areas. Furthermore, the paper presents a new analogue fading channel model for use in simulation of low margin narrow-band systems. The channel model has two states, one representing an open area and the other representing a shadowed area. The model parameters have been fitted to the recorded measurements. The interest has been on models for the open and lightly shadowed states and though some deep fade analyses have been included, the paper mainly focuses on the former