摘要
介绍了一种在无线传感网中针对移动节点的自适应定位算法,通过建立移动节点运动模型,借助运动模型估计信息辅助移动节点的定位,解决了只有2个或1个信标节点的无法定位的问题,本算法能够适应不同移动节点的运动状态,动态地调整定位时间间隔,从而既能提高节点定位的精度,也能在保证定位误差的情况下降低定位频率,节省定位能量的消耗,延长整个无线传感网的生存时间。
A kind of self-adapting localization algorithm referring to the mobile nodes in wireless sensor networks is introduced. By establishing a motion model for mobile nodes and using the estimation information to localize the mobile nodes, the problem that the nodes can＇ t be localized when there are only one or two beacons is resolved. The algorithm has the ability to adapt itself to different situations and dynamically adjust the localizing time intervals so that it can not only improve the accuracy of localization, but also reduce the frequency to localize under a certain error of localization. It will save the energy for localization and can make the whole sensor network work for a longer time.
出处
《传感器与微系统》
CSCD
北大核心
2008年第8期109-112,共4页
Transducer and Microsystem Technologies
关键词
无线传感网
移动节点
自适应
定位
wireless sensor networks
mobile nodes
self-adapting
localization
