%0 Journal Article
%T Localization Algorithm Based on Dynamic Hop Distances in Wireless Sensor Networks with Holes<br>一种基于动态跳数距离的有洞无线传感器网络定位方法
%A ZHANG Song-tao
%A JIANG Hong-bo
%A LIU Wen-yu
%A <br>张松涛
%A 蒋洪波
%A 刘文予
%J 计算机科学
%D 2011
%I 
%X Range-free positioning technology in wireless sensor networks is a challenge. It is difficult to estimate the dislances between sensor nodes which are more than one hop away in anisotropic sensor networks with holes. We introduced a range-free localization approach in anisotropic wireless sensor networks with holes,which can estimate the ranges accurately between unknown node and reference nodes. First, the algorithm estimates different average distances of one hop along the shortest path between different anchor pairs. Then some unknown node picks up the anchor pairs,whose average distance of one hop along the shortest path is larger than some threshold and the shortest path passes corresponding unknown node,as reference nodes to estimate its position. The new algorithm can filter out the anchor nodes with higher errors of estimation distances as reference nodes. Simulation results show that the localization accuracy of new algorithm is higher than previous algorithms.
%K Wireless sensor networks
%K Localization
%K Dynamic hop distances<br>无线传感器网络，定位，动态跳数距离
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=150A4379599489388F08AB04356F6796&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=CA4FD0336C81A37A&sid=11B4E5CC8CDD3201&eid=1D0FA33DA02ABACD&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=0