基于测距修正的差分进化的DV-Hop定位算法  

DV-Hop localization algorithm based on ranging distance-corrected differential evolution

作　　者：褚银菲 吕惠芳[2] Chu Yinfei;Lv Huifang(Department of Information Engineering,Jiangsu Union Technical Institute Yixing Campus,Wuxi 214200,China;Department of Electro-Mechanics and Information Engineering,Wuxi Vocational Institute of Arts&Technology,Wuxi 214200,China)

机构地区：[1]江苏联合职业技术学院宜兴分院信息学院,无锡214200 [2]无锡工艺职业技术学院机电与信息工程学院,无锡214200

出　　处：《国外电子测量技术》2021年第6期33-37,共5页Foreign Electronic Measurement Technology

基　　金：全国教育科学规划课题(BJA190227)项目资助。

摘　　要：设计精确的定位算法是无线传感网络(wireless sensor networks, WSNs)的研究热点。针对距离向量-跳距(distance vector-Hop, DV-Hop)定位算法的定位精度不高问题,提出基于测距修正的差分进化的节点定位算法(RDEL)算法,提高节点定位精度。首先,RDEL算法利用接收信号强度值对跳数值进行修正,然后,通过构建测距误差代价函数,并利用无偏估计对跳距进行校正。最后,通过差分进化算法估计未知节点的位置。仿真结果表明,相比于传统的DV-Hop算法,提出的RDEL算法降低了平均定位误差,提高了定位精度。Designing accurate localization algorithm is a research focus in wireless sensor networks(WSNs). In order to improve the localization accuracy of DV-Hop in WSNs, ranging distance-corrected differential evolution localization(RDEL) algorithm is proposed in this paper. In RDEL, the number of hop is corrected by received signal strength indicator. Then, the cost function of ranging error is constructed, and the distance-hop is corrected through unbiased estimation. Finally, the location of unknown nodes is estimated by differential evolutionary algorithm. Numerous simulation results show that compared with the traditional DV-Hop algorithm, the average positioning error of RDEL algorithm is reduced, and the positioning accuracy is higher.

关 键 词：无线传感网络 距离向量-跳距 测距修正 接收信号强度 差分进化算法 

分 类 号：TPT393[自动化与计算机技术]