无线传感器网络中DV-Hop定位算法的改进  

Improved DV-Hop Localization Algorithm for Wireless Sensor Networks

作　　者：曾福庚 

机构地区：[1]海南热带海洋学院数学系,海南三亚572022

出　　处：《海南热带海洋学院学报》2016年第5期68-71,共4页Journal of Hainan Tropical Ocean University

基　　金：三亚市院地科技合作项目(2015YD14)

摘　　要：针对无线传感器网络无需测距的DV-Hop定位算法中存在误差率较大的问题,本文从两个方面对其进行了改进:引入平均误差修正信标节点间的平均每跳距离;引入权重因子计算未知节点坐标.仿真结果表明,改进算法比传统DV-Hop算法误差率更低,能更好地应用于实际场景.The conventional DV - Hop algorithm is a typical range - free localization algorithm. It will bring about large error, due to taking average hop distance as the expected distant. In order to reduce the error, the original algorithm was improved from two aspects. Firstly, the average hop distance of the beacon nodes was corrected by introducing the average hop distance error. Secondly, the weight factor was added so as to calculate the coordinates of the unknown nodes. The simulation results show that the improved algorithm has lower error rate than that of the conventional DV - Hop algorithm, thus it applies to the actual scene more accurately.

关 键 词：无线传感器网络 DV—Hop定位算法 平均每跳距离 权重因子 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]