摘要
现有的定位方式因为需要建立网络模型和能量消耗不平均的现象,故不适用于有少量节点随机移动的无线传感网络。针对此类无线传感网络中各节点的定位问题,在分析了定位的计算复杂度和能量损耗的前提下,提出了分簇定位算法,在簇的范围内对发生移动的节点采用接收信号强度测距(RSSI)与质心定位相结合(CLA)的方法进行定位。分析与仿真结果表明:在有少量锚节点存在的无线传感网络中利用改进的分簇定位方法有效的提高了移动节点的定位精度,降低了网络的能量消耗,使网络的生命周期达到最长。
The existing location method usually need to establish network model and the energy consumption is inequality.So it does not apply to a small number of mobile nodes in wireless sensor networks.Aim at the positioning of each node in such wireless sensor network,on the premise of analysing the computational complexity and the energy consumption of positioning,clustered location algorithm is proposed.Using Receiving Signal Strength Location（RSSI）combined with Centroid Localization Algorithm（CLA）to locate the mobile nodes in the cluster.The analysis and simulation results show that：the improvement of clustering method can improve the positioning accuracy and reduce the network energy consumption effectively.The network life cycle achieve the longest.
出处
《传感技术学报》
CAS
CSCD
北大核心
2011年第9期1326-1330,共5页
Chinese Journal of Sensors and Actuators
基金
煤炭协会2010年计划项目(MTKJ2010-294)
关键词
无线传感网络
分簇算法
移动节点定位
能量最优
wireless sensor network
clustering algorithm location
mobile node localization
energy optimization
