WSN中节点定位方法的改进  

Improvement of Node Locating Algorithm in WSN

作　　者：马淑丽[1] 赵建平[1] 张炳婷 盛艳梅[1] 陈丽[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165

出　　处：《通信技术》2015年第4期453-457,共5页Communications Technology

基　　金：山东省高等学校科技计划项目资助(No.J12LN08);国家自然科学基金资助项目(No.11302118)~~

摘　　要：无线传感器网络节点位置信息的获取非常关键。首先考虑节点分布问题提出了一种新的节点分布模式,并改进定位算法,将节点定位过程主要分为一级定位和二级定位。一级定位采用基于优先值阈值的质心定位算法,并将一级定位的节点作为新锚节点参与二级定位。二级定位使用基于优先值阈值的DV-Hop最小二乘定位算法。Matlab仿真结果证明,提出的节点分布模式利于节点定位,一级定位算法降低了计算量,并与二级定位算法一起提高了定位精度。It is of great importance to acquire the node location information of wireless sensor network. Firstly, for the problem of node distribution, a novel node distribution model is proposed, and the locating algorithm modified. Meanwhile, the node locating process is divided into first-stage locating and second- stage locating. The first-stage locating adopts centroid locating algorithm based on priority threshold, with its node as a new anchor node participating in the second-stage locating, while the second-stage locating uses DV-Hop locating algorithm based on least square priority threshold. Matlab simulation results show that the proposed node distribution model could facilitate node locating, the first-stage locating algorithm could reduce the amount of calculation and together with the second-stage locating algorithm, improve the locating precision.

关 键 词：节点定位 DV-HOP 最小二乘法 质心定位法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]