基于无线传感网络的改进质心加权定位算法  

Improved Weighted Centroid Localization Algorithm Based on Wireless Sensor Networks

作　　者：封小钰[1] 周慧雯 许朝伍 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2015年第2期131-134,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：武汉市科技计划基金资助项目(2013010501010128);国家级大学生创新训练计划基金资助项目(20131049709005)

摘　　要：针对无线传感网络定位易受环境影响,定位精度不高的问题,提出了一种排除障碍物影响的改进定位算法。系统主要采用加权质心定位算法进行定位,并在此基础上通过设置阈值和剔除受障碍物影响的参考节点的方法,提高了定位的精度,并且加强了算法对复杂环境的自适应性。仿真实验结果表明,改进后的算法受障碍物的影响较小,提高了复杂环境下的定位精度。The localization based on wireless sensor network is easily affected by environment and resulted in low accuracy. An improved localization algorithm was put forward.The system mainly used the weighted centroid localization algorithm to lo-cate, and on this basis, the precision of localization was raised, and the algorithm＇s adaptability to the environment was strength-ened by setting the threshold and eliminating the reference nodes which was affected by the obstacles.The results obtained from simulation and experiments show that the improved algorithm is hard to be affected by obstacles.The precision of localization in complex environment is improved.

关 键 词：定位算法 ZIGBEE 无线传感网络 质心加权 障碍物 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]