UAV Jitter May Have Merit: A Fading Analysis in Air-to-Sea Two Ray Channels
UAV Jitter May Have Merit: A Fading Analysis in Air-to-Sea Two Ray Channels
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DOI：
10.1109/lwc.2022.3199370
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发表时间：
2022-11
影响因子：
6.3
通讯作者：
Jing Wang;Jiachen Qian;Jue Wang;Ruifeng Gao;Yingdong Hu;Ye Li;W. Feng
中科院分区：
文献类型：
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作者：
Jing Wang;Jiachen Qian;Jue Wang;Ruifeng Gao;Yingdong Hu;Ye Li;W. Feng
气流和振动引起的抖动效应可能对无人机通信有害，例如，它可能导致发射波束和实际用户方向之间的不匹配。然而，抖动会给通道带来额外的随机性，这在相对静态和深度衰落的稀疏通道中可能具有优势。为此，我们选取了常用的空海双射线传播模型，研究了无人机抖动对信道衰落统计特性的影响。假设抖动角为高斯随机模型，分别推导出抖动有益概率(无人机抖动增加接收功率的概率)和抖动下的平均接收功率的解析表达式。因此，对抖动有利条件进行了分析，并通过仿真进行了验证。
Jitter effects caused by airflow and vibrations could be harmful to UAV communications, e.g., it may cause mismatch between the transmit beam and actual user direction. However, jitter introduces additional randomness to the channel, which may have merit in sparse channels that are relatively static and deep faded. For this consideration, we pick the commonly used air-to-sea two ray propagation model and investigate the impact of UAV jitter on the channel fading statistics. Assuming a Gaussian random model for the jitter angle, we derive analytical expressions for the jitter-beneficial probability (the probability that UAV jitter increases the receive power), and the average receive power under jitter, respectively. Accordingly, the jitter-beneficial conditions are analyzed and verified via simulations.