【摘要】 基于加权算法的权值选择,分析传统三角加权质心定位算法的权值不合理性,提出一种基于三角质心定位与改进的信号强度比值的加权质心定位的混合定位算法,利用近似点(信标节点间的交点)代替信标节点作为顶点,节点间距离的比值代替信号强度的比值作为权值。该算法正确体现了不同节点对未知节点的影响程度,有效降低了路径损耗指数变化对定位精度的影响。实验结果表明,该算法提高了定位精度,可以实现区域定位。更多还原

【Abstract】 Based on weight choice of weighted algorithm,analyzing irrationality of weight in triangle weighted centroid positioning algorithm,a hybrid location algorithm was put forward using the approximate point(the cross point of beacon nodes)instead of beacon nodes as the vertices and the ratio of the distance between nodes instead of received signal strength indication(RSSI)ratio as the weighted value.The algorithm correctly reflects the influence of the different nodes on the unknown node and effectively reduces the impact of different path loss exponent on localization precision.Experimental results show that this proposed algorithm improves precision and can realize regional location.更多还原