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针对无人机MIMO三维单跳同心椭圆环(GBSBCER)信道模型,给出无人机空时频信道相关函数的简要形式,推导了归一化无人机MIMO信道相关矩阵,应用该矩阵分析了天线结构、飞行距离以及散射体分布等参数对无人机MIMO信道矩阵条件数和容量等信道特性参量的影响。仿真表明,通过合理布局天线,调整飞行参数可以提高无人机MIMO通信性能,为实现MIMO技术在无人机通信系统的应用提供理论基础。
For unmanned aerial vehicle MIMO three-dimensional one-hop concentric elliptical ring (GBSBCER) channel model, a simplified version of UAV space-time channel correlation function is given. The normalized UAV MIMO channel correlation matrix is deduced. The influence of antenna structure, flight distance and scatterer distribution on the channel characteristic parameters such as the number of unidentified MIMO channel matrix and its capacity are discussed. The simulation results show that, by arranging the antenna rationally and adjusting the flight parameters, it can improve the performance of UAV MIMO communication and provide the theoretical basis for the application of MIMO technology in the UAV communication system.