基于无线传感网的海洋监测节点定位算法  

Node localization algorithm of wireless sensor network in marine monitoring

作　　者：任秀丽[1] 韩静晶[1] 

机构地区：[1]辽宁大学信息学院,沈阳110036

出　　处：《计算机应用》2012年第10期2692-2695,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60704046);辽宁省自然科学基金资助项目(201202089)

摘　　要：针对应用于海洋监测的无线传感器网络,提出了一种基于蒙特卡罗算法的节点定位算法。该算法根据海洋中洋流在某一时间段内线性运动的特性,通过引入符合海水运动规律的角度来提高节点在位置预测阶段的精度;并根据节点感知压力的大小来确定预测坐标的置信度,以对预测坐标进行修正,进而得到最终的预测结果。仿真结果表明,该算法比传统的定位方法在不同的锚节点密度、节点密度、节点运动速度和时间等条件下都表现出更好的性能。Focusing on the applications of wireless sensor networks in marine monitoring, a localization algorithm of sensor nodes based on Monte Carlo was proposed. The algorithm improved the location accuracy of the prediction stage by introducing the right angle of the sea motion; and revised the prediction coordinates by the confidence of the prediction coordinates which was gained through the node＇s perception of pressure. The simulation results show the proposed algorithm has outstanding performance compared with traditional methods under conditions of different node density, seed density, moving speed and time.

关 键 词：无线传感网络 移动节点 定位 精度 蒙特卡罗定位 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]