基于SPW的流星余迹信道建模与系统仿真

Meteor Burst Channel Model Building and System Simulations for Meteor Burst Communications

在分析流星余迹物理特性及其信号传输机制的基础上,对流星余迹信道数学模型进行了深入研究,采用部分实现与整体综合相结合的设计方法,基于SPW仿真平台分别对稀疏欠密类流星余迹信道、稀疏过密类流星余迹信道、多径流星余迹信道、短时间欠密类簇和长时间欠密类簇信道等进行模块搭建,并在此基础上对流星余迹信道的各种物理特性进行了仿真实现,建立了流星余迹通信系统的信道模型。该模型具有便于修改、可行性强、易于与通信链路相结合等特点。该信道模型能够体现流星余迹信道的物理特性,可有效支持流星余迹通信系统的设计实现。

Based on analyzing the characteristics of meteor burst channel（MBC） and the principle of signal propagation,the mathematic model of meteor burst channel was developed effectively.Adopting the idea from simple to complex for system design,five types of meteor burst channel were modeled respectively on the platform of SPW,including single underdense meteor trail channel,single overdense meteor trial channel,multipath meteor trail channel,short term underdense meteor trail group and long term underdense meteor trail group.In addition,comprehensive physical characteristics of meteor burst channel were emulated and all channel models were integrated into one system.Simulation results show that the channel model is easy to modify,convenient for applying to communication links and of good feasibility,which also agree with the physical characteristics of the meteor-burst channel very well.It may lay the foundation for the engineering realization of the practical MBC system.