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中文摘要：
给出一种适用于NLOS环境的UWB定位方案，提出基于最强路径SP（trongest path）检测的TOA（time of arrival）估计，移动终端MT（mobile terminal）只需检测到2条不同方向的SP就可以完成与固定站FS（fixed station）之间的定位，且无需考虑障碍物位置，并同样适合LOS情形。通过对IEEE．802．15．4a中3种NLOS信道模型的仿真，分析了信道冲激响应和SP搜索区域的关系以及方案中各参数对定位性能的影响，结果表明NLOS环境中无法检测直射路径时，此定位方案是行之有效的。
英文摘要：
A localization scheme via UWB suitable for NLOS was given and a TOA estimation based on the strongest path （SP） detection was proposed. The positioning operation between FS and MT was implemented when FS detected two strongest paths from different direction. The aforementioned scheme was also applicable for LOS situation and it was unnecessary to consider the location of obstruction. According to three NLOS channel model simulations in IEEE.802.15.4a, the relationship between channel impulse response and SP search region was analyzed, localization performance impacted by various parameters was also discussed. The results demonstrate the feasibility and validity of the proposed scheme especially when is unable to detect the direct path in NLOS.
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