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arXiv 2005.02432eess.SP
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航空频谱测量:利用自主无人机进行无线电地图估计

Aerial Spectrum Surveying: Radio Map Estimation with Autonomous UAVs

Daniel Romero, Raju Shrestha, Yves Teganya, Sundeep Prabhakar Chepuri

摘要:

无线电地图正在成为一种流行的手段,赋予下一代无线通信与态势感知。特别是,无线电地图预计将在无人机(UAV)通信中发挥核心作用,因为它们可以用于确定UAV以前没有去过的空间位置处的干扰或信道增益。用于无线电地图估计的现有方法利用由其位置不能被控制的传感器收集的测量。相比之下,本文提出了一种无人机沿轨迹收集测量值的方案。该轨迹被设计为在短时间操作中获得目标无线电地图的准确估计。路线规划算法依赖于地图不确定性度量来收集在那些位置处的测量结果,在这些位置处测量结果信息量更大。开发了一种在线贝叶斯学习算法,每次收集新的测量值时更新地图估计和不确定性度量,从而实现实时操作。

英文摘要:

Radio maps are emerging as a popular means to endow next-generation wireless communications with situational awareness. In particular, radio maps are expected to play a central role in unmanned aerial vehicle (UAV) communications since they can be used to determine interference or channel gain at a spatial location where a UAV has not been before. Existing methods for radio map estimation utilize measurements collected by sensors whose locations cannot be controlled. In contrast, this paper proposes a scheme in which a UAV collects measurements along a trajectory. This trajectory is designed to obtain accurate estimates of the target radio map in a short time operation. The route planning algorithm relies on a map uncertainty metric to collect measurements at those locations where they are more informative. An online Bayesian learning algorithm is developed to update the map estimate and uncertainty metric every time a new measurement is collected, which enables real-time operation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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