一种用于多径环境的超分辨率TOA定位算法  

Super-resolution TOA algorithm in multi-path environments

作　　者：李晶[1] 裴亮[2] 曹茂永[2] 郁道银[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室,天津300072 [2]山东科技大学青岛校区,山东青岛266510

出　　处：《电波科学学报》2006年第5期771-776,共6页Chinese Journal of Radio Science

基　　金：山东省优秀中青年科学家科研奖励基金(02BS011)

摘　　要：分析了基于来波到达时间(TOA)的定位技术中存在的问题,把时域超分辨率最小范数(Min-Norm)谱估计算法引入到频域TOA估计领域,提出了互相关Min-Norm超分辨率TOA算法,利用互相关技术理论上可消除非相关噪声对算法的影响。仿真结果表明,该算法具有超分辨率特性及强抗噪性,可在小带宽、强噪声背景下获得稳定、准确的时延估计结果,适于在多径效应严重的环境中应用。The location technology based on TOA （time of arrival） was analyzed, and the Min-Norm super-resolution spectral estimation algorithm in time-domain was introduced to the field of TOA estimation in frequency-domain. A cross-correlation based on Min-Norm super-resolution TOA algorithm was proposed. The algorithm can completely eliminate irrelevant noises in theory. The simulation results show that it is super-resolution and robust to noises and can achieve precise TOA estimation with a narrow bandwidth in noisy backgrounds.

关 键 词：无线定位 TOA 奇异值分解 子空间方法 超分辨率 

分 类 号：TN929.53[电子电信—通信与信息系统]