基于ZigBee网络的优选信标节点定位算法

摘要

In order to obtain high precision of location, a new Location Algorithm was brought up by taking account of improvement of the distribution of beacon nodes. In this algorithm, beacon nodes were distributed as regular hexagon, appropriate beacon nodes were selected to take part in Location calculation. RSSI was adopted as the distance measuring reference. In order to decrease the impact on RSSI of Gauss noise, several measuring for average was used in the algorithm. The conclusion that the new algorithm could improve the positioning accuracy was obtained by experiments.%为了提高ZigBee的定位精度，从改善信标节点分布的角度提出了一种新的定位算法。信标节点布局采用正六边形的方式，优选出信标节点参与定位计算。在算法中以RSSI的测量值作为距离的参考，且为了减小高斯噪声对RSSI测量值的影响，采取了多次测量求均值的方法。通过实验得出新算法能够改善定位精度的结论。