Propagation delay characteristics analysis in LEO satellite multi-beam antenna coverage

In this paper a calculation model of propagation delays of satellite beams is introduced for LEO multi-beam satellite communications system. Based 011 actual parameters and beam coverage patterns of the Iridium and Globalstar system, the maximum propagation delay differentials in several typical beams from the center to the edge of the satellite's coverage are calculated. Analysis of these results can provide reference for analyzing the feasibility of LEO multi-beam satellite system compatible with uplink synchronization in LTE. © (2013) Trans Tech Publications, Switzerland.