A Robust UWB Array Localization Scheme through Passive Anchor Assistance  

作　　者：Haipeng Lu TianyuWang Feng Ge Yuan Shen 

机构地区：[1]Electronic Engineering Department,Tsinghua University,Beijing 100084,China [2]Beijing National Research Center for Information Science and Technology,Beijing 100084,China

出　　处：《China Communications》2021年第4期1-13,共13页中国通信（英文版）

摘　　要：Ultra-Wide Bandwidth(UWB)localization based on time of arrival(TOA)and angle of arrival(AOA)has attracted increasing interest owing to its high accuracy and low cost.However,existing localization methods often fail to achieve satisfactory accuracy in realistic environments due to multipath effects and non-line-of-sight(NLOS)propagation.In this paper,we propose a passive anchor assisted localization(PAAL)scheme,where the active anchor obtains TOA/AOA measurements to the agent while the passive anchors capture the signals from the active anchor and agent.The proposed method fully exploits the time-difference-of-arrival(TDOA)information from the measurements at the passive anchors to complement single-anchor joint TOA/AOA localization.The performance limits of the PAAL system are derived as a benchmark via the information inequality.Moreover,we implement the PAAL system on a low-cost UWB platform,which can achieve 20 cm localization accuracy in NLOS environments.

关 键 词：ultra-wideband localization NLOS environments passive listening adaptive unscented Kalman filter(UKF) 

分 类 号：TN925[电子电信—通信与信息系统]