基于TOA的传感器网络定位误差几何分布研究  

TOA-Based Location Error Geometry Distribution in Sensor Networks

作　　者：陈元元[1] 姚佩阳[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《通信技术》2009年第10期63-65,68,共4页Communications Technology

摘　　要：无线传感器网络中,自身节点定位精度与确定该节点位置的锚节点的几何关系密切相关。分析了TOA算法的定位原理,引入了GDOP描述定位误差与锚节点群几何布局关系,并给出了基于测距的算法中GDOP的计算方法。通过场景分析,结合质心算法原理,提出锚节点群内点定位精度高,仿真验证了结论。Nodes localization accuracy is closely related with anchor nodes＇ topology in wireless sensor networks. The positioning principle of TOA algorithm is described, and the GDOP is introduced to describe the relationship between localization error and anchor nodes＇ geometry distribution. Then, this paper gives the computing method of GDOP, and advances inside node localization with high accuracy in anchor nodes. The application analysis and simulation test has proved the conclusion.

关 键 词：待感器网络 时间到达 定位精度 锚节点 网络拓扑 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]