无线传感器网络自身定位方法研究与实现  

Research and implementation of self-localization method for wireless sensor network

作　　者：刘辉亚[1] 徐建波[1] 

机构地区：[1]湖南科技大学计算机科学与工程学院,湘潭411201

出　　处：《信息技术》2008年第5期16-18,共3页Information Technology

基　　金：国家自然科学基金项目(60673061);湖南省自然科学基金项目(02JJY5006)

摘　　要：作为一种全新的信息获取和处理平台,无线传感器网络能在应用领域内实现复杂的大范围监测和跟踪任务,因而网络中的节点自身定位就显得尤为重要。而现有节点自身定位算法大多数建立于节点布署于同一平面的理想状态,与实际的被监测区域有一定的差距。因此提出一种改进算法——补偿系数算法,同时在三边测量法中使用了坐标误差最小的最优解——最小二乘解来提高无线传感器网络节点自身定位的准确程度以满足实际应用的需要。As a new information acquisition and process platibrm, wireless sensor networks can achieve complex large-scale monitoring and tracking tasks in the application areas, so the self-localizations of nodes play an important role in the network. However nowadays most positioning algorithms of the nodes are based on an ideal state that the nodes are in the same plane, with a certain distance to the actual monitored region. Therefore this paper provides an improved algorithm-compensation coefficient algorithm, and uses the optimal solution with smallest error coordinates-least squares solutions in the trilateral measurement method to improve wireless sensor network nodes in the accuracy of positioning itself to meet the application needs.

关 键 词：信标 距离增长比 补偿系数算法 三边形算法 最小二乘解 

分 类 号：TN92[电子电信—通信与信息系统]