【摘要】 在加权质心定位算法和接收信号强度指示测距模型分析的基础上,提出了一种基于自适应迭代搜索的三维质心定位算法。首先计算未知节点的初始搜索步长,然后通过多次迭代、更新搜索点和搜索步长,提高节点的定位精度。该算法能自动调节搜索步长,减少迭代次数,具有一定的自适应能力。仿真分析了不同比例的信标节点、通信半径对定位误差的影响。结果表明,该算法的定位精度和稳定性良好,适用于无线传感器网络的三维定位。更多还原

【Abstract】 The adaptive iterative search based on centroid localization algorithm is proposed based on the analysis of cancroids localization algorithm and received signal strength indicator model.First,the initial search step of unknown nodes is figured out,through multiple iterations,updating the search points and search step,the accurate location of nodes is got.This proposed algorithm has better ability of self-adaptive which can improve the accuracy of locating node,automatically adjust the range of search step,and have small number of times to iterate.The influence of different communication radius and density of distribution of reference nodes on location error was analyzed.The results show that the new approach performs well with high location accuracy and strong stability,and it is suitable for localization in three-dimensional space of wireless sensor network.更多还原