论文标题
无人机摆动对空对地面无线通道的影响
Impact of UAV Wobbling on the Air-to-Ground Wireless Channel
论文作者
论文摘要
本文使用里克里亚的多路径通道模型研究了无人机（UAV）摇摆不足无线通道（UE）之间连贯时间的影响。我们考虑了无人机数量的两种不同的方案：（i）单个无人机方案（SUS）和（ii）多个无人机方案（MUS）。对于每种情况，我们都会通过两个随机过程（即Wiener和Sinosoidal过程）进行建模，并表征通道自相关函数（ACF），然后用来得出通道的相干时间。对于MUS，我们进一步表明，不同无人机的无人机通道彼此不相关。本文中的一个关键观察是，即使对于小无人机摇摆，通道的连贯时间也可能很快降级，这可能会使跟踪频道并建立可靠的通信链接变得困难。
This paper studies the impact of unmanned aerial vehicle (UAV) wobbling on the coherence time of the wireless channel between UAVs and a ground user equipment (UE), using a Rician multi-path channel model. We consider two different scenarios for the number of UAVs: (i) single UAV scenario (SUS), and (ii) multiple UAV scenario (MUS). For each scenario, we model UAV wobbling by two random processes, i.e., the Wiener and sinusoidal processes, and characterize the channel autocorrelation function (ACF) which is then used to derive the coherence time of the channel. For the MUS, we further show that the UAV-UE channels for different UAVs are uncorrelated from each other. A key observation in this paper is that even for small UAV wobbling, the coherence time of the channel may degrade quickly, which may make it difficult to track the channel and establish a reliable communication link.
