改进Watterson模型的无人机短波信道仿真

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。

Simulation on Improved Watterson Model for UAV HF Channel

The standard method for simulation of HFcommunication channel is Watterson model, which can comprehensively describe HF characters, including multi-path delay, Doppler spread, multi-path gain and so on. In order to adapt the characteristics of HF communication channel on UAV, the Watterson model is improved, and the improved model simulated on Simulink software platform, thus to analyze the effects of different flight states on HF communication performance. This is of significant importance for the study of fading channel in such a high-speed mobile state as UAV when no practrcal-measurement data is available.