电子学报2018，Vol.46Issue(6)：1468-1474,7.DOI:10.3969/j.issn.0372-2112.2018.06.028
基于CFR虚拟阵列天线的AOA室内定位
AOA Indoor Localization Based on the CFR Virtual Array Antenna
摘要
Abstract
Accurate estimation of the angle of arrival (AOA) of the signal provides the possibility of high precision indoor positioning,in order to achieve the accurate AOA and extract the AOA information of the direct path to locate the tar-get,this paper presents a sub-meter indoor localization system that uses the channel frequency response (CFR) to expand the array antenna. Firstly,this paper collects the CFR information to estimate the AOA and time of arrival (TOA) of Wi-Fi sig-nal. Secondly,this paper presents a direct path identification algorithm based on the two-dimensional clustering information of AOA and TOA. In addition,this paper proposes a line of sight (LOS) environment and non line of sight (NLOS) envi-ronment recognition algorithm to distinguish whether the current receiver is in the LOS or NLOS environment relative the transmitter. Finally,this paper uses the existing Wi-Fi devices with three antennas to measure the angle and positioning in the indoor room. The experimental results show that the proposed positioning system can achieve a median error of 0. 8 m and 1. 3 m respectively in the LOS and NLOS environment,and can be used for high precision indoor positioning.关键词
Wi-Fi/室内定位/信道频率响应/信号到达角Key words
Wi-Fi/indoor localization/channel frequency response (CFR)/angle of arrival (AOA)分类
信息技术与安全科学引用本文复制引用
田增山,张千坤,周牧,王斌..基于CFR虚拟阵列天线的AOA室内定位[J].电子学报,2018,46(6):1468-1474,7.基金项目
国家自然科学基金(No.61301126,No.61471077) （No.61301126,No.61471077）
长江学者和创新团队发展计划(No.IRT1299) （No.IRT1299）
重庆市科委重点实验室专项经费,重庆市基础与前沿研究计划项目(No.cstc2015jcyjBX0065) （No.cstc2015jcyjBX0065）
重庆市高校优秀成果转化资助项目(No.KJZH17117) （No.KJZH17117）
