无线传感网中DV-Hop定位算法的改进研究  

Localization method based on modified particle swarm optimization for wireless sensor networks

作　　者：邴晓瑛 徐保国[2] 

机构地区：[1]江南大学轻工过程先进控制教育部重点实验室,江苏无锡214122 [2]江南大学物联网工程学院,江苏无锡214122

出　　处：《电子设计工程》2016年第1期86-88,91,共4页Electronic Design Engineering

基　　金：国家自然科学基金面上项目(21276111);国家自然科学基金青年基金(21206053);浙江省自然科学基金重大专项(2011C12033)

摘　　要：针对网络拓扑结构不规则的无线传感器网络中经典DV-Hop定位算法计算未知节点位置存在较大误差的问题,提出了一种基于多通信半径修正跳数的改进算法。通过对通信半径进行分级细化,利用多级通信半径修正信标节点到信邻节点的跳数信息,使未知节点的平均跳距更符合实际网络情况。仿真结果表明,在相同的网络拓扑结构下,改进的定位算法有效的提高了传感器节点的定位精度。An improved algorithm based on more communication radius and weighting corrected the unknown nodes＇ hop-size in order to solve the problem that when using the traditional DV-Hop algorithm localization error is too large in irregular topology network. The communication radius is graded, and hops between beacon nodes and neighbor nodes are corrected by more level communication radius, in order to make the hop size of unknown nodes more conform to the actual network. The simulation experimental results showed that, the proposed algorithm possesses of higher location precision in the same network topology, broaden the application scope of localization algorithm.

关 键 词：无线传感器网络 DV-HOP定位 多通信半径 定位精度 

分 类 号：TN92[电子电信—通信与信息系统]