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Three-dimensional TDOA/AOA hybrid localization algorithm based on UWB in indoor environment
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three-dimensional-tdoa-aoa-hybrid-localization-algorithm-based-on-uwb-in-indoor-environment
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本文选用超宽带 (UWB)技术作为基础,以实现高精度室内人员定位的要求。文中选用IEEE802.15.4a模型作为UWB的信道模型,利用Matlab软件仿真UWB发射及接收信号,通过Wylie算法鉴别目标节点与参考节点间的LOS和NLOS传播,筛选出性能更优的参考节点,更新到达时间差,得到较为准确的初值估计,保证之后的算法收敛。同时推算出可靠度最高的参考节点与目标节点的方位角、俯仰角信息,将其代入基于泰勒级数的TDOA/AOA混合算法后,进行三维定位,最后利用Matlab模拟及分析不同算法三维定位情况。与其他算法相比,优化后的混合算法在各种情况下均表现出了更为良好的定位精度,显示了其应用于室内定位的优势。
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Three-dimensional, TDOA, AOA, hybrid localization algorithm, UWB, 室内定位, 非视距, 超宽带, 混合算法
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Three-dimensional TDOA/AOA hybrid localization algorithm based on UWB in indoor environment
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