无线传感器网络节点自定位算法的研究

Research on Self-Localization Algorithm of Wireless Sensor Networks

无线传感器网络作为一全新的信息获取和处理技术,在国防、工农业、环境监测等众多领域都有着重大的应用价值和科研价值.而节点定位信息在无线传感器网络中是一项必需的基础信息,文中介绍了节点定位技术的基本原理,并提出一种新的分级循环定位算法.通过仿真显示:当锚节点密度为10%,测距误差为5%,网络节点定位误差小于20%射频半径以及定位覆盖率为97%.

Wireless sensor network is a novel technology about acquiring and processing information. It has the significant application value and scientific research value in the national defense, industry and agriculture,environmental monitoring and so on . The information about node location is indispensable to the wireless sensor networks. The basic theory of Self-Localization Algorithm and a novel graded circle position estimation for WSN are presented. When anchor percent is 10% of nodes in sensor networks and the range estimates error is 5%, the performance of algorithm by simulation is that position estimates error less than 20% telecommunication range and the network＇s coverage is 97%.