每个S5重复第一个S5的无线信号，将音乐通过无线电传播传送到100英尺的范围之内。
Each S5 repeats the wireless signal from the first one, rebroadcasting the music up to 100 feet at a time.
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.
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