%0 Journal Article
%T Study on the Application of DV-Hop Localization Algorithms to Random Sensor Networks<br>DV-Hop定位算法在随机传感器网络中的应用研究
%A Ji Wei-wei
%A Liu Zhong
%A <br>嵇玮玮
%A 刘中
%J 电子与信息学报
%D 2008
%I 
%X DV-Hop algorithm is one of the important range-free localization algorithms. The algorithm performs better in isotropic density sensor networks, however, it has larger location errors in randomly distributed networks. According to the localization principle of the DV-Hop algorithm, this paper proposes three improvements including the estimation of average single hop distance, the calculation of distance between unknown nodes and reference nodes and the estimation of node positions. These improvements can be used independently or jointly to replace the corresponding steps in the DV-Hop algorithm. The localization performances are analyzed in theory and with simulations. The results show that the proposed improvements can greatly enhance the localization accuracy of the unknown nodes. In addition, the proposed schemes do not change the localization process of the DV-Hop algorithm, and hence they need no further communication resource and additional hardware requirement.
%K Sensor network
%K DV-Hop
%K Node localization<br>传感器网络
%K DV-Hop算法
%K 节点定位
%K 节点定位算法
%K 随机传感器
%K 网络通信量
%K 应用
%K 研究
%K Networks
%K Sensor
%K Random
%K Algorithms
%K Localization
%K Application
%K 支持
%K 硬件
%K 位置估计方法
%K 结果
%K 定位性能
%K 综合
%K 仿真
%K 分析
%K 改进
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=DF496D7A52DCFB8F13D2BD03ECB9CF9A&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=714E16F7CF56F343&eid=3A9B6DFDAB34D091&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=19