提出了基于RTT(Round Trip Time)和AOA(Angle Of Arrival)混合测距方式的室内定位方法
一种轻量级基于网格的聚类算法(Lightweight Grid-Based Cluster
LGBC)被用来生成移动节点的定位区域.算法不需要获取室内环境的先验信息.仿真结果表明
LGBC算法复杂度低
计算开销小
并且与同类算法相比
定位精度提高约65%.
Abstract
Location of sensor plays a pivot role in WSNs.Most of the localization algorithms can achieve extremely high positioning accuracy in line of sight (LOS) environment.However
they are unable to obtain ideal accuracy due to the obstacles in non-line of sight (NLOS) environment.In order to solve the NLOS propagation problem in indoor environment
we propose an indoor localization method based on RTT and AOA using a lightweight grid-based clustering (LGBC) algorithm.The LGBC algorithm does not depend on any prior information of indoor environment and possesses significant flexibility.The simulation results show that LGBC algorithm has low time complexity and small computational overhead.Furthermore
it outperforms the other method by about 65 percent in terms of localization accuracy.