基于二次质心的无线传感器网络定位算法  

Twice centroid based localization algorithm for wireless sensor network

作　　者：李虎俊[1] 郭蓝天[2] 卢军[3] 李哲[2,3] 刘丽艳[2] 

机构地区：[1]湖北职业技术学院培训学院,湖北孝感432000 [2]西北工业大学自动化学院,陕西西安710072 [3]湖北工程学院新技术学院,湖北孝感432000

出　　处：《现代电子技术》2014年第23期5-8,12,共5页Modern Electronics Technique

基　　金：国家自然科学基金项目(61303224);湖北省自然科学基金项目(ZRY0465)

摘　　要：节点的定位是无线传感器网络中的一种重要技术。提出了一种新的无线传感器网络定位算法——基于二次质心算法的定位算法,与以往的基于三边测量的加权质心方法不同,该算法改进了对未知节点位置的估算方法,一定程度上避免了因多次估算质心而产生的累积误差,提高了定位精度。仿真表明,该算法的定位精度较之前的三边测量方法提高了约19%。Node localization is one of the key techniques in wireless sensor networks. In this paper,a new wireless sensor network localization algorithm based on twice centroid algorithm is proposed. This algorithm is different from the traditional weighted centroid localization algorithm based on trilateration algorithm. In this algorithm,the estimation method of unknown node location is improved,so as to avoid error accumulation caused by a large number of estimation to a certain extent and improve the localization precision. The simulation results show that the accuracy of this twice centroid localization algorithm is about 19% higher than that of the previous trilateration algorithm.

关 键 词：无线传感器网络 节点定位 二次质心算法 三边测量算法 

分 类 号：TN926-34[电子电信—通信与信息系统] TP393.06[电子电信—信息与通信工程]