简单山地地形下无人机空对地信道传播建模

Zhuangzhuang Cui, K. Guan, Danping He, B. Ai, Z. Zhong
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引用次数: 5

摘要

无人机系统(UAS)在第五代(5G)及5G以上(B5G)移动通信中的应用在十年内引起了极大的关注。撇开控制与非有效载荷通信和有效载荷通信不谈,无人机(UAV)空对地(AG)信道实质上决定了链路性能。此外,AG通道在不同的场景下呈现出不同的特征。在山地场景中,无人机通常用于提供通信覆盖并从地面传感器节点(SN)收集数据。本文提出了无人机AG信道在这种情况下的解析多径传播模型。通过几何关系计算山反射光的路径长度。结果表明,单界反射的生存时间大于双界反射的生存时间。此外,通过射线追踪模拟验证了该传播机制,并且所提出的路径损耗模型比AG通道中常用的双射线模型更能描述通道行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Propagation Modeling for UAV Air-to-Ground Channel Over the Simple Mountain Terrain
The use of unmanned aircraft systems (UAS) for the fifth generation (5G) and beyond 5G (B5G) mobile communications has aroused great attention in decade years. Regardless of the control and non-payload communication and payload communication, the unmanned aerial vehicle (UAV) air-to-ground (AG) channel essentially determine the link performance. In addition, the AG channel presents distinct characteristics in different scenarios. In the mountain scenario, the UAV is generally used to provide communication coverage and collect the data from the ground sensor node (SN). In this paper, an analytical multipath propagation model for UAV AG channel in such a scenario is presented. The path length of the reflections from the mountain is calculated through the geometrical relationship. Moreover, the result turns out that the survival time of the single-bound reflection from the mountain is larger than that of the double-bound reflection. In addition, the propagation mechanism is validated by ray-tracing simulations and the proposed path loss model is more capable of describing the channel behavior than the mostly used two-ray model in AG channels.
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