地球同步轨道卫星信道模型分析及实现  

The analysis and implementation of geosynchronous orbit meteorological satellite

作　　者：郭业才[1] 袁涛[1] 周润之 张秀再[1] 

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《电子技术应用》2014年第8期98-100,104,共4页Application of Electronic Technique

基　　金：2013年度江苏省高校自然科学研究重大项目(13KJA510001);江苏省"六大人才高峰"培养对象资助(2008026);2012年度高校科研成果产业化推进工程项目(JHB2012-9)

摘　　要：为研究地球同步轨道卫星信道的传播特性,依据星地链路空间分布情况,研究了自由空间损耗、电离层闪烁、大气吸收、多径及阴影对信道链路的影响;根据天气状况的"好"与"坏",提出了地球同步轨道卫星信道的Rice模型和Suzuki模型,并用两状态Markov巧妙地联系在一个动态模型中,以反映天气变化带来的状态之间的转换;最后设计了信道模型的实现方法。仿真结果表明,所提模型仿真数据与实测数据具有很好的一致性。In order to study the propagation characteristic of geosynchronous orbit satellite channel,the free space loss, iono- spheric scintillation, atmospheric absorption, multipath and shadow effects were analyzed based on the spatial distribution of the satellite-earth link. The Rice and Suzuki model of the geosynchronous orbit satellite channel were proposed according to the good or bad weather condition. Then the two-state Markov model was introduced into satellite channel model. Finally, the satellite chan- nel simulator was designed and simulated based on the proposed method. The results show that the data of proposed model has a good consistency of the measured one.

关 键 词：多径效应 阴影效应 MARKOV模型 

分 类 号：TN927.23[电子电信—通信与信息系统]