一种三维无人机MIMO宽带信道模型

摘要

针对无人机环境特点和MIMO天线系统,建立并分析了由直射、反射和散射分量组成的基于圆筒散射三维几何传播模型,根据方位角非全向散射和俯仰角非对称分布的特点,结合无人机实际飞行参数特点,推导出简洁的闭环空时频联合相关函数,通过仿真进行了验证,分析了空时频相关特性的影响因素.%According to surroundings of the Unmanned Aerial Vehicle (UAV)in the wideband Multiple-Input Multiple-Output (MIMO) channel, we presente a three-dimensional geometrically based cylinder scattering (GBCS) model with direct, reflective and scattering components.A closed-form joint space-time-frequency cross-correlation function is derived for the three-dimensional non-isotropic scattering and asymmetrical environment based on the flying parameters in practice.Simulations indicate the feasibility and validity of the simplification.The factors of the space-time-frequency correlation are analyzed in the simulation.