临近空间静止通信平台模型研究

在临近空间通信系统中,大气、降雨、闪烁会引起空地链路信道质量的恶化。以临近空间飞艇为通信平台,通过分析Ka频段临近空间通信信道的电波传播特性,重点分析了降雨对信号衰落的影响,在此基础上建立了Ka频段临近空间静止通信信道,以及Ka频段临近空间静止通信信道模型的仿真模型,并在Matlab环境下对Ka频段临近空间静止信道模型的BER性能进行仿真,仿真结果为临近空间链路分析及抗雨衰对策提供理论依据。

Motionless Communication Channel Model on Near Space

In the near space communication system, the atmosphere, rain, flash will cause the open space link channel quality deterioration. In this paper, near space airship is taken as a communications platform, the Ka-band near space communication channel propagation characteristics of radio waves are analyzed, the focal point is put on analyzing the impact of rainfall on the signal fading. Based on this, the channel model and simulation model of Ka-band near space communication channel are established, and the simulation of the BER performance in Matlab environment is conducted, which provide a theoretical basis for the analysis of close spatial link and the resistance to Rain Fade.