室内环境对ZigBee无线网络信号传输强度的影响

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室内空间利用无线网络进行定位的算法中质心定位法等需要利用信号强度测距,但由于室内空间环境复杂,基于信号强度的测距模型准确性对室内无线网络定位精度影响较大。分析影响室内无线网络接收信号强度的主要因素,通过实验研究了收发终端距地高度、天线方向、接收终端移动方向和人体遮挡4种因素对信号传输强度的影响。根据实测数据建立了典型室内无其他障碍物遮挡环境中接收信号强度随传输距离的衰减模型。研究结果表明,所建立的室内空间无其他障碍物遮挡环境信号强度衰减模型,提供了更为准确的信号强度与传输距离之间的关系。
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