无线传感器网络中免测距的节点自定位算法  

Range-free self-localization algorithm for wireless sensor networks

作　　者：郑晨[1] 王玫[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2010年第6期550-552,共3页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(60472091);国家自然科学基金(60962001);广西自然科学基金(0640168)

摘　　要：无线传感器网络定位技术的显著特点,是利用有限的锚节点信息从而实现对全网内所有节点的定位。而同心圆定位方法是精度较高的免测距定位算法,通过将一些与锚节点通信半径最接近点的距离范围形成不同程度的圆环,然后彼此相交增加对未知节点的几何约束关系并对其进行位置估计。仿真结果表明,该算法获得较高的定位精度,同时计算和通信开销适中,不需要节点具备测距能力,是一个可扩展的算法,适用于各向同性的密集网络。The salient features of location technology for wireless sensor networks are： the anchor node can achieve the whole positioning of all nodes with limited information within the network.The concentric anchor-beacons proposed recently is a localization scheme with high precision.In this paper,a novel range-free self-localization algorithm was presented for improvement based on the concentric anchor-beacons.The localization scheme was inspired by using the ring area with different radius range and the position estimated through the geometrical relationship of ring.Simulation results show that the algorithm can get higher positioning accuracy,while computation and communication overhead is moderate.The algorithm does not need nodes with ranging capability and is a scalable algorithm for isotropic-intensive network.

关 键 词：无线传感器网络 同心圆定位 圆环 定位 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]