无人机毫米波信道建模进展和挑战

Advances and Challenges of UAV Millimeter‑Wave Channel Modeling

无人机毫米波通信技术结合无人机和毫米波的优势,提供高速数据传输和广域网络覆盖能力,在军用通信系统中拥有广阔的应用前景。精确的信道模型是无人机毫米波系统设计和性能评估的重要理论基础。不同于传统移动通信场景,无人机通信信道具有明显的三维传播特征,构建模型需要考虑包括三维散射空间、三维飞行轨迹及姿态、三维阵列天线和三维窄波束等多种因素。本文首先总结了无人机毫米波信道建模的新需求和挑战,并详细阐述了无线信道建模方法以及现有信道模型的研究进展,最后给出了信道建模的发展方向及关键技术,旨在为无人机毫米波信道模型的科学构建和标准化等研究提供参考。

Combining the advantages of unmanned aerial vehicle(UAV)and millimeter-wave technologies,the UAV millimeter-wave(mmWave)communication system can provide high-speed data transmission and wide network coverage capability,which leads to a broad application prospect in military communication systems.The accurate channel model is vital for the UAV mmWave communication system design and performance evaluation.Different from the conventional mobile communication scenarios,the UAV mmWave communication scenario has obvious three-dimensional propagation characteristics.The key factors,i.e.,three-dimensional scattering space,three-dimensional flight trajectory and posture,three-dimensional array antenna and three-dimensional narrow beam,should be taken into account in the channel modeling.This paper summarizes the new requirements and challenges of UAV mmWave channel modeling,and then reviews the wireless channel modeling method and the research progress of channel models.Finally,the future development of UAV mmWave channel modeling and key technologies are given,which aims to provide reference for the scientific construction and standardization of UAV mmWave channel models.