摘要
针对井下定位精度不高的问题,提出一种基于加权质心定位的改进定位算法。通过带测点扫描AP节点,把信号强度信息RSSI值、MAC地址和IP地址发送到服务器,计算出最近3个节点,利用节点RSSI的差值之比,计算出加权值,再用改进加权质心定位算法计算位置坐标的试验,结果显示,该定位算法定位精度提高34.45%。
In view of the low accuracy of underground location, an improved location algorithm based on weighted centroid location is proposed. Scanning AP nodes with measuring points, sending the RSSI value, MAC address and IP address of signal strength information to the server, calculating the nearest three nodes, using the ratio of RSSI difference of nodes, calculating the weighted value, and then calculating the location coordinates with the improved weighted centroid location algorithm. The experimental results show that the location accuracy of the algorithm is improved by 34.45%.
引文
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