云雾天气下卫星信道两状态Markov模型研究与实现

Research and Implementation of the Satellite Channel Two-state Markov Model under the Cloudy and Foggy Weather

为研究云雾天气下卫星信道的传播特性,建立了云雾天气下卫星信道两状态模型。首先分析多径效应、阴影效应及云雾天气对卫星信道链路的影响;然后分别建立表征云和雾天气下信道传输特性的Corazza信道模型和Nakagami信道模型,并利用两状态Markov模型实现云雾天气变化带来的信道转换;最后设计了信道模型的实现方法。仿真结果表明,所建模型模型的仿真数据与理论数据具有较好的吻合性。

In order to research the propagation characteristics of the satellite channel under the environment of the cloudy and foggy,a satellite channel two-state Markov model under the cloudy and foggy weather is proposed.Firstly,the influences of the multipath effect,shadowing effects,and cloudy and foggy weather on the satellite channel are analyzed. The corresponding Corazza model and Nakagami model are established based on the channel propagation characteristics under the cloudy and foggy conditions. Then the two-state Markov model is introduced into satellite channel model to achieve the transformation of the channel characteristics with the change of cloudy and foggy weather. Finally,the simulation method of the satellite channel two-state Markov model is designed. The results show that the simulation results of proposed model are quite consistent with the theoretical analyses.