基于定向天线的混合光无线传感网络节点迭代定位方法  

Hybrid optical wireless sensor network node iterative positioning method based on directional antenna

作　　者：张燕[1] 王莉君[1] 刘磊[1] ZHANG Yan;WANG Lijun;LIU Lei(Chengdu College of University of Electronic Science and Technology of China,ChengDu 611731,China)

机构地区：[1]电子科技大学成都学院,成都611731

出　　处：《激光杂志》2022年第2期134-138,共5页Laser Journal

基　　金：四川省自然科学基金(No.201923542548)。

摘　　要：针对目前方法对网络节点进行迭代定位时,由于未能利用定向天线算法划分节点信号的接收功率级,导致该方法在进行节点迭代定位时存在定位精度低、节点距离估计误差大、定位效果差的问题,提出基于定向天线的混合光无线传感网络节点迭代定位方法。首先基于定向天线原理划分节点信号的接收功率级,并在网络中确定锚节点;再基于划分的功率级以及锚节点,利用相交度比的迭代算法确定网络的相邻节点,并通过定位单元完成对边界节点的处理;最后通过对节点位置的确定,实现混合光无线传感网络节点的迭代定位。实验结果表明,运用该方法进行节点迭代定位时,定位精度可达90%,在通信距离为20米和100米的情况下,节点距离估计误差分别在5%和10%以内,该方法的定位精度高、节点距离估计误差小、定位效果好。When the current method is used to iteratively locate network nodes, because the directional antenna algorithm fails to divide the received power level of the node signal, this method has low positioning accuracy, large node distance estimation error, and poor positioning effect when performing node iterative positioning. The problem is to propose an iterative positioning method for hybrid optical wireless sensor network nodes based on directional antennas. First, divide the received power level of the node signal based on the principle of directional antenna, and determine the anchor node in the network;then, based on the divided power level and anchor node, use the iterative algorithm of the intersection ratio to determine the neighboring nodes of the network, and complete it through the positioning unit The processing of boundary nodes;finally, the iterative positioning of hybrid optical wireless sensor network nodes is realized by determining the position of the node. The experimental results show that when using this method for node iterative positioning, the positioning accuracy can reach 90%. When the communication distance is 20 m and 100 m, the node distance estimation error is less than 5% and 10% respectively. This method has high positioning accuracy, small node distance estimation error and good positioning effect.

关 键 词：定向天线 混合光 无线传感网络 节点迭代定位 定位方法 

分 类 号：TN219[电子电信—物理电子学]