基于WSN路由节点度模型的楼宇走廊定位算法

针对现有的无线传感器网络(WSN)定位方法应用于结构复杂的楼宇走廊时,存在定位精度较低的问题,提出一种基于WSN路由节点度模型的楼宇走廊定位算法.该算法在路由节点度模型的基础上,先采用基于支持向量回归(SVR)的方法,用少量锚节点定位普通路由节点,达到间接增加锚节点覆盖率的目的;然后采用基于中垂线分割的方法定位随机分布在区域内的未知节点和移动终端.仿真表明:与传统SVR定位算法和核岭回归定位算法相比,所提出的算法精度提高了定位精度,满足室内定位精度要求(1 m~3 m),且降低了对锚节点数量的需求,可运用于楼宇走廊WSN定位.

A building corridor localization algorithm based on WSN routing node degree model

Considering the poor localization accuracy when applying the existing localization algorithm to complicated building corridor,a localization algorithm based on WSN routing node degree model is proposed. On the basis of the routing node degree model,the proposed algorithm firstly uses support vector regression to locate the routing node based on a few beacon's location,so as to improve the rate of beacon coverage indirectly. Then,the proposed algorithm uses a way of perpendicular bisector division to locate the unknown nodes and the mobile termi-nals. Simulation shows that the proposed algorithm improves the localization accuracy compared with LSVR and KRR,satisfy the requirement of indoor localization(1 m~3 m),reduce the demand of anchor number,so it can be used in the localization of WSN for the building corridor.