基于估计距离映射的无线传感网定位算法  

Positioning algorithm in wireless sensor network based on estimate of distance mapping

作　　者：冯钧[1] 吴晓蓓[2] 徐志良[2] 葛辉[1] 

机构地区：[1]南京理工大学泰州科技学院,江苏泰州225300 [2]南京理工大学自动化学院,江苏南京210094

出　　处：《兰州理工大学学报》2015年第1期112-116,共5页Journal of Lanzhou University of Technology

基　　金：江苏省自然科学基金(BK2012803);教育部博士点基金项目(20113219110028)

摘　　要：针对移动无线传感器网络中的定位技术问题,以及现有定位算法在定位误差、网络耗能、分布式处理等方面存在的不足,提出一种先进的估计距离映射定位算法.该算法首先通过构建一个最优线性传换,提供一个从估计矩阵到距离矩阵的映射关系,然后利用映射关系计算距离矢量,最后在此基础上计算节点的位置坐标.仿真结果表明,所提出的算法与其他传统算法相比,定位误差减小,同时降低了网络能耗,从而验证了算法的有效性.Aimed at the existing problem in wireless sensor networks such as the positioning technique and the shortcoming in connection with positioning error,network energy consumption and distributive processing,an advanced positioning algorithm with estimated distances mapping is proposed.In this algorithm,the mapping of an estimation matrix onto a distance matrix is provided by means of constructing an optimal linear transformation first,then the distance vector is calculated with mapping relation,and finally on this basis,the positional coordinates of the nodes are evaluated.It is shown by the simulation results that,compared with other traditional algorithm,the positioning error and energy consumption of the network are reduced,so that the effectiveness of the proposed algorithm is verified.

关 键 词：无线传感器网络 定位算法 估计距离映射 线性传换 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]