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Abstract: |
Satellite mobile communication system has become the research orientation with relatively rapid development in communication field, and it is a strong and modern means of communication. In this paper, the whole mobile satellite communications system is introduced in details, and the space station and earth stations of the various parts of the system function are presented. Two link design methods are introduced, and link equation method is used for the design of satellite communication link, and the impact from the spread loss of satellite links on satellite communications is analyzed, including the impact of free-space loss, the atmosphere and ionosphere on radio wave. The probability density physical meaning of three commonly used channel with channel characteristics (Rician channel, Reyleigh and Lognormal channel channel) are analyzed. Moreover, satellite channels (Nakagami fading channel, Corraza models and C. Loo model) are simulated, and the results are analyzed.
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