摘要
DV-Hop是节点定位的一种常用算法,文中利用CC2431提供的RSSI对DV-Hop进行改进,提出了一种基于RSSI的RDV-Hop(RSSI used in DV-Hop)算法.重点对DV-Hop算法的第一和第二阶段进行改进,在第一阶段,提出防止广播信息的循环,减少不可定位节点;第二阶段,引入RSSI辅助定位,改善平均每跳距离的计算.仿真表明RDV-Hop算法在一定程度上能够提高网络连通性,改善节点覆盖率,减小定位误差提高定位精度.
A new improved algorithm called RDV-Hop is proposed in this paper, which improve the first and second stages of DV-Hop implementation. It reduces the location chances of unable-located nodes in first stage. In the second stage, according to the sensor node design based on CC2431 in this paper, it improves the calculation method of average one-hop distance by introducing RSSI into auxiliary location. And then, DV-Hop and RDV-Hop are simulated in AlgoSenSim. Optimizing distribution and proportion of beacon nodes in network is proposed in this paper to improve network connectivity and reduce location error.
出处
《微电子学与计算机》
CSCD
北大核心
2008年第10期231-233,共3页
Microelectronics & Computer
基金
江苏省自然科学基金(BK2006039)
