传感技术学报Issue(5)：677-683,7.DOI:10.3969/j.issn.1004-1699.2015.05.012
基于信道状态信息的无源被动定位∗
Device-Free Passive Localization Based on Channel State Information
摘要
Abstract
Device-free Passive localization is a system envisioned to detect,track and identify entities that do not carry any device,nor participate actively in the localization process. Compare to traditional solutions based on the received signal strength,channel state information( CSI) has more advantage. On observing the stable characteristics of CSI while retaining sensitivity to nearby human locomotion,the method proposed to leverage the histogram feature of the subcarrier amplitudes as signatures for omnidirectional passive human detection. It also considered the mul-tipath affection of indoor environment and utilized the fingerprint system to improve performance. Experimental re-sults show that the localization method is reliable with an average false positive of 13% and false negative of 7% in detecting human position in 8 directions. In the case of effective detection radius of 1 m,the deviation is 25% and the relative error is 0.196 m.关键词
无源定位/接收信号强度/信道状态信息/正交频分复用/物理层Key words
passive localization/RSSI/channel state information/OFDM/physical layer分类
信息技术与安全科学引用本文复制引用
吴哲夫,周言..基于信道状态信息的无源被动定位∗[J].传感技术学报,2015,(5):677-683,7.基金项目
浙江省自然科学基金项目( LY13F010011,LQ13F050005,LY14F050004) （ LY13F010011,LQ13F050005,LY14F050004）
