【摘要】 节点定位技术是WSN网络应用的基础,在基于RSSI的定位过程中,节点与信号源之间的位置关系对测距误差有较大影响。通过对无线传播路径损耗模型的分析,给出了信标节点的优选原则,同时将Euclidean算法根据未知节点的类型进行了优化。实验证明,改进方案与传统的定位算法相比明显降低了WSN网络中的定位误差。更多还原

【Abstract】 The node location is basic technology for WSN application..During the location process of RSSI,the position relation between the nodes and signal source has serious influence on the distance measurement error.We have analyzed the wireless broadcasting loss model and proposed an optimized selection rule for beacon nodes.S Simultaneously the Euclidean algorithm is also optimized based on the type of unknown nodes.The experiments shows that the improved scheme has obviously decreased the location error in WSN,compared with traditional positioning algorithm.更多还原