arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2405.09352eess.SPcs.SYeess.SY
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关于天线方向图在无源无线电感知中的影响研究

On the impact of the antenna radiation patterns in passive radio sensing

Federica Fieramosca, Vittorio Rampa, Stefano Savazzi, Michele D'Amico

AI总结:

该研究针对无源无线电感知场景,改进基于衍射的电磁模型以适配智能天线的非均匀角度滤波特性,并通过实验量化了衍射与多径分量对感知精度的影响,为相关场景的天线选型与模型优化提供参考。

摘要:

基于标量衍射理论的电磁(EM)人体模型无需耗时的全波方法,即可预测人体运动对无线传播信道的影响。但这类模型在多径效应显著的复杂环境中效果欠佳。近期,新兴的无线电感知应用提出采用具有非各向同性辐射特性的智能天线以提升覆盖范围。本文研究了天线方向图在无源无线电感知应用中的影响,提出对基于衍射的电磁模型进行改进,以适配天线的非均匀角度滤波特性。随后,我们通过实验量化了在配备智能天线的环境中,衍射分量与多径干扰分量对无线电感知精度的影响。

英文摘要:

Electromagnetic (EM) body models based on the scalar diffraction theory allow to predict the impact of subject motions on the radio propagation channel without requiring a time-consuming full-wave approach. On the other hand, they are less effective in complex environments characterized by significant multipath effects. Recently, emerging radio sensing applications have proposed the adoption of smart antennas with non-isotropic radiation characteristics to improve coverage.This letter investigates the impact of antenna radiation patterns in passive radio sensing applications. Adaptations of diffraction-based EM models are proposed to account for antenna non-uniform angular filtering. Next, we quantify experimentally the impact of diffraction and multipath disturbance components on radio sensing accuracy in environments with smart antennas.

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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