无人机通信信道模型研究

研究合适的无人机通信信道模型对无人机数据链的设计和性能分析具有重要意义。目前，根据无人机不同的飞行状态和不同的飞行环境，通信信道模型可以分为大尺度衰落模型和小尺度衰落模型。在分析这两种模型相关参数和概率分布函数的基础上，结合大尺度衰落和小尺度衰落的特性，利用自由空间路径损耗和粗糙地面路径损耗理论，建立了适合不同环境下无人机特性的统一信道模型。

Research of the UAV Communication Channel Model

It is essential to study a statistical model of UAV（Unmanned Aircraft Vehicle） communication channel for the design and performance analysis of data link of UAV. Based on different situation and environment of flight, the communication channel models can be classified as large scale fading model and small scale fading model. The interrelated parameters and PDF （probability density function） of parameters were analyzed. The performances of large scale fading and small scale fading were discussed. According to roughness path loss and free-space loss theory, the uniform UAV channel model was designed, which is suitable for different environment.