基于毫米波相控阵的室内环境传感与定位系统

Yifei Sun;Jie Li;Tong Zhang;Rui Wang;Xiaohui Peng;Xiao Han;Haisheng Tan
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引用次数: 9

摘要

本文详细介绍了一种60 ghz毫米波(mmWave)频段室内布局传感与定位系统mmReality。mmReality系统由一个发射器和一个移动接收器组成,两者都具有相控阵和单个射频(RF)链。为了重建房间布局,将导频信号通过不同的发射和接收波束对从发射机传送到接收机,从而捕获各个方向的多径信号。然后利用空间平滑和二维多信号分类算法对传播路径的出发角和到达角进行检测。此外,采用多载波测距技术对路径长度进行测量。因此,通过测量房间不同位置的接收机,可以精确定位接收机和虚拟发射机,重建房间布局。实验表明,重构的房间布局可以利用AoA频谱对移动设备进行定位。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Indoor Environment Sensing and Localization System via mmWave Phased Array
In this paper, an indoor layout sensing and localization system with testbed in the 60-GHz millimeter wave (mmWave) band, named mmReality, is elaborated. The mmReality system consists of one transmitter and one mobile receiver, both with a phased array and a single radio frequency (RF) chain. To reconstruct the room layout, the pilot signal is delivered from the transmitter to the receiver via different pairs of transmission and receiving beams, so that multipath signals in all directions can be captured. Then spatial smoothing and the two-dimensional multiple signal classification (MUSIC) algorithm are applied to detect the angle-of-departures (AoDs) and angle-of-arrivals (AoAs) of propagation paths. Moreover, the technique of multi-carrier ranging is adopted to measure the path lengths. Therefore, with the measurements of the receiver in different locations of the room, the receiver and virtual transmitters can be pinpointed to reconstruct the room layout. Experiments show that the reconstructed room layout can be utilized to localize a mobile device via the AoA spectrum.
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