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Watterson模型是多年来仿真短波信道的标准表示方法,其对短波信道多径时延、多普勒扩展、多径增益等特性都有全面的描述。针对无人机短波通信信道的特点,结合无人机的各种不同飞行状态,提出一种改进的Watterson模型,并在Simulink软件平台上对改进模型进行了仿真验证,仿真结果主要分析了不同飞行状态对短波通信性能的影响。在当前没有权威实测数据的情况下,对无人机等高速移动通信的信道衰落研究具有重大意义。
The Watterson model is the standard representation of the shortwave channel emulated over the years and provides a comprehensive description of the characteristics of shortwave channel multipath delays, Doppler spreads and multipath gains. According to the characteristics of UAV shortwave communication channel, an improved Watterson model is proposed based on the different flight conditions of UAVs. The improved model is validated by Simulink software platform. The simulation results mainly analyze the different flight modes Influence of state on shortwave communication performance. In the absence of authoritative data, the research on channel fading of high speed mobile communications such as UAV is of great significance.