基于移动锚节点的无线传感器网络渐进线定位  

WSN Location Based on Mobile Anchor with Asymptote Method

作　　者：田美玲[1] 赵清华[1] 王华奎[1] 

机构地区：[1]太原理工大学信息工程学院,太原030024

出　　处：《世界科技研究与发展》2010年第5期590-592,共3页World Sci-Tech R&D

摘　　要：为了解决无线传感器网络定位的成本和计算量问题,本文提出了基于移动锚节点的双曲线渐近线定位方法。首先设计了移动锚节点运动轨迹,然后利用TDOA测距技术测得俩对锚节点到待定位节点距离差,最后利用双曲线渐近线的交点来定位。仿真结果表明:在减小计算量和定位成本的同时。In order to reduce the cost and computation of the wireless sensor network location,a positioning method based on the mobile anchor is designed, which use the asymptote of the hyperbola. First, I designed the motion trace of the mobile anchor, then start to locate for un- known nodes by calculating the intersection points of the asymptotes after we have known the time difference between the time from an un- known sensor to one position of the mobile anchor and the time from the unknown senor to another position of the mobile anchor. Simulation result show that： this method not only reduce the calculated amount and cost but also improve the positioning accuracy.

关 键 词：无线传感器网络 双曲线定位 移动锚节点 

分 类 号：TN929.5[电子电信—通信与信息系统] TP212.9[电子电信—信息与通信工程]