摘要
在许多无线传感器网络应用中节点定位是至关重要的,现有的节点定位算法大部分都是针对静态传感器网络,移动无线传感器网络的定位研究相对较少。针对定位节点和锚节点移动特性,结合无线传感器网络的特点,提出了一种基于几何约束的非测距定位算法。该算法不需要复杂的计算,也不需要大量的通信,仅仅利用移动锚节点的信息,通过几何约束条件来缩小未知节点所在区域的面积,从而完成定位。仿真实验结果表明,所提出的算法与其它算法相比,能够提高定位精度,有较好的抗干扰性,并且大大减少了能量消耗。
Localization is one of the crucial issues in the applications of wireless sensor networks.Most of the current algorithms aim for the static sensor networks,and there are relatively few localization schemes for mobile sensor networks.According to the mobility of sensor nodes and the characteristics of sensor networks,this paper proposes a geometry-based rang-free localization algorithm.This algorithm does not need complex computation and hardware devices,but narrows down the area in which the sensor nodes reside only by geometric constrains.The simulation results demonstrate that the proposed algorithm can improve the localization accuracy,and it also reduces the energy consumption.
出处
《微型电脑应用》
2010年第12期34-36,43,共4页
Microcomputer Applications
基金
上海市科委重大项目:工业无线网络监控系统关键技术研究与应用(08511501600)
关键词
移动传感器网络
非测距
几何约束
定位
Mobile Sensor Networks
Range-free
Geometric Constrains
Localization
