一种新的无线传感器网络分布式节点定位方法  

A New Distributed Node Localization Method for Wireless Sensor Network

作　　者：贺远华[1] 黎洪生[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2010年第4期538-541,共4页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：为了提高无线传感器网络节点定位覆盖率,抑制误差累积,在Euclidean测距的基础上,提出了一种新的分布式节点定位算法。该算法通过多跳距离测量提高定位覆盖率;设置置信因子门限值,采用组合三边测量获得坐标估计值集合,再采用加权平均的方法提高定位精度。仿真结果表明,该算法能够有效地抑制定位误差在网络内的扩散,适用于大规模的无线传感器网络节点定位。In order to increase localization coverage and restrain error cumulation,a new distributed localization algorithm was proposed based on Euclidean ranging.The algorithm utilized multi-hop ranging approach to increase localization coverage.It set believable factor threshold and used combination trilateration method to obtain the set of coordinate estimates,and then weighted average method was employed to improve localization accuracy.Simulation results showed that the algorithm was efficient to prevent localization errors from spreading through the networks,and it was fit for the large scale sensor networks.

关 键 词：无线传感器网络 节点定位 多跳距离测量 置信因子 

分 类 号：TN953[电子电信—信号与信息处理]