无线传感器网络的自身定位算法研究  

Study on Self-positioning Algorithm for Wireless Sensor Networks

作　　者：倪海燕[1] 应祥岳[1] 简家文[1] 胡俊溟 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]丽水市缙云县委办公室,浙江丽水321400

出　　处：《宁波大学学报（理工版）》2009年第1期7-11,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：宁波大学科研基金(XY0600054)

摘　　要：自身定位算法在无线传感器网络技术的目标定位和跟踪等方面起着举足轻重的作用,而算法的优劣直接影响着自身定位和目标定位的精度.以传统的DV-hop算法为依据,提出了一种WDH(Weighted-DV-hop)定位算法,在获得跳数的步骤中,根据接收到的传播信号区分强弱程度,并取0.5或1作为跳数递增量的加权修正值,来得到新的跳数.最后通过Matlab平台实现算法的验证,表明其可以明显地提高定位的精度.A self-locating algorithm plays a very important role in positioning and tracking targets of interest in the wireless sensor networks. The precision of both self- and target- positioning is directly determined by the competence of the algorithm developed. Based on the generic DV-hop algorithm, this paper presents an algorithm termed WDH（Weighted-DV-hop）, which is enabled to judge the strength based on the transmitted signals that it receives in the process of computing the hop number and take 1 or 0.5 as the weight of the hop number for the incremental change to ultimately minimize the hop number. The simulation is conducted using Matlab as the platform, suggesting that the significant improvement can be noted in terms of positioning precision rendered by the proposed algorithm.

关 键 词：无线传感器网络 自身定位算法 DV-HOP算法 WDH算法 加权 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]