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arXiv 2301.04510eess.SP
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基于卷积神经网络的定位到达时间误差估计

Time of Arrival Error Estimation for Positioning Using Convolutional Neural Networks

Anil Kirmaz, Taylan Şahin, Diomidis S. Michalopoulos, Muhammad Ikram Ashraf, Wolfgang Gerstacker

摘要:

无线高精度定位最近吸引了越来越多的研究兴趣,由于应用的多样性,如工业资产跟踪,自动驾驶,过程自动化等。然而,由于无线电环境的挑战,获得高度准确的位置信息受到阻碍。基于时间的定位方法的主要误差来源是不准确的到达时间(ToA)或距离估计。现有的基于机器学习的解决方案,以减轻这种错误依赖于传播环境分类阻碍了低数量的类,采用一组特征表示信道测量仅在有限的程度上,或帐户的ToA估计的设备特定的专有方法。在本文中,我们提出了卷积神经网络(CNN)来估计和减轻误差的各种ToA估计方法利用信道脉冲响应(CIR)。基于来自两个独立运动的真实世界测量,所提出的方法在最先进的ToA估计器的测距精度(高达37%)上产生了显着的改进,通常消除了优化底层传统方法的需要。

英文摘要:

Wireless high-accuracy positioning has recently attracted growing research interest due to diversified nature of applications such as industrial asset tracking, autonomous driving, process automation, and many more. However, obtaining a highly accurate location information is hampered by challenges due to the radio environment. A major source of error for time-based positioning methods is inaccurate time-of-arrival (ToA) or range estimation. Existing machine learning-based solutions to mitigate such errors rely on propagation environment classification hindered by a low number of classes, employ a set of features representing channel measurements only to a limited extent, or account for only device-specific proprietary methods of ToA estimation. In this paper, we propose convolutional neural networks (CNNs) to estimate and mitigate the errors of a variety of ToA estimation methods utilizing channel impulse responses (CIRs). Based on real-world measurements from two independent campaigns, the proposed method yields significant improvements in ranging accuracy (up to 37%) of the state-of-the-art ToA estimators, often eliminating the need of optimizing the underlying conventional methods.

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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