摘要
无线传感器网络中的Dv-Hop算法是一种无需测距的节点定位算法,经仿真观察,该算法在信标节点密度较低时节点平均误差较大且稳定性不好。提出了一种改进Dv-Hop算法,即在一个网络区域的边缘设置信标节点。经仿真验证,该算法在和Dv-Hop同等信标节点密度的情况下,在定位精度、节点定位的稳定性以及能源消耗方面都有所改善。
Dv-Hop Algorithm is one of the Range-Free Localization Algorithms for Wireless Sensor Networks. The simulation results show that this algorithm can yield big average error and poor stability with low beacon node density. This paper proposes an improved Dv-Hop algorithm because the beacon node at the borderland of the network is fixed. The simulation results show that this algorithm can yield higher positioning accuracy,better stability and energy consumption compared to the Dv-Hop in the same node density.
出处
《电子器件》
CAS
2009年第6期1091-1093,共3页
Chinese Journal of Electron Devices
基金
浙江省人才项目资助(R105473)
关键词
无线传感器网络
定位算法
定位精度
信标节点
wireless sensor networks
location algorithm
positioning accuracy
anchor node
