文中通过对无线电传播路径损耗模型的分析，提出了加权质心定位算法，用信标节点对未知节点的不同影响力来确定加权因子，以提高定位精度。
The design problem of location algorithm in wireless sensor networks is investigated, and a new node positioning algorithm is proposed based on the mobile beacon node method.
实验结果表明，与普通加权质心算法相比较，该算法具有更高的定位覆盖度和定位精度。
The simulation results show that the algorithm has better estimation error and node localization coverage than common weighted-centroid algorithm.
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