Survey of Satellite-ground Channel Models for Low Earth Orbit Satellites
Low Earth Orbit(LEO)satellite has the characteristics of low communication delay,low deployment cost and wide coverage,and has become an important part of the construction of the future space earth integrated network.However,satellite communication has large end-to-end propagation distance,complex fading and fast terminal movement speed,thus the channel characteristics are very different from the terrestrial cellular network.Based on this,in order to have a more comprehensive understanding of the characteristics and channel model of LEO satellite-ground channel,the current standardization progress of the satellite-ground channel by the international standards organization are summarized,the fading characteristics of the satellite ground channel at different propagation positions are discussed,the existing important channel models are classified and shown according to the modeling method,and finally the prospects for future work are proposed.
万方数据
维普
