一种新的基于区域划分的距离-损耗模型室内WLAN定位系统
doi: 10.3724/SP.J.1146.2006.01786
A New WLAN Indoor Localization System Based on Distance-loss Model with Area Partition
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摘要: 该文基于室内RSS模型,结合定位空间的区域划分,构建了一个室内用户定位系统;在各个区域内,将在已知位置的信息收集点采集到的各无线接入点信号强度,与计算机模拟实际环境获得的信号强度值相比较,以此设定RSS模型参数;然后采用最大似然法估计用户位置。实际系统测定结果表明,该方法可以获得较为精确的室内用户位置估计。Abstract: Based on indoor RSS distance-loss model,an indoor localization system is set up with means of area partition.Parameters of the model are set by comparing the signal data recorded at several collection spots with the ideal signal value lists generated by the computer,which simulates the actual environment.Then users location estimates can be achieved with Maximum Likelihood(ML)estimation algorithm.Experiments show the algorithm is effective and can obtain quite precise location result.
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