分布式声探测无线网络时间同步算法研究  

Synchronization algorithm for distributed audio orientation wireless networks

作　　者：刘文怡[1] 冯耀辉[1] 李海宏[1] 张文栋[1] 

机构地区：[1]中北大学仪器与动态测试教育部重点实验室,太原030051

出　　处：《电子测试》2008年第8期4-8,90,共6页Electronic Test

摘　　要：分布式声探测无线网络是一种基于声达时间差(TDOA)进行目标定位的无线传感器网络;而基于TDOA算法的分布式定位需要节点之间严格时间同步,本文正是对节点之间严格时间同步进行了重点研究。文中系统分析了分布式声探测无线网络的应用环境、工作机制和硬件平台,在此基础上提出节点之间的采样同步和全网同步问题,并基于后同步思想和分级同步机制,设计了分布式声探测无线网络节点同步的整体解决方案。该方案已经进行了组网测试,有效解决了分布式身探测的时间同步问题。本文对相关工程实践具有一定的指导意义。The distributed acoustic detection wireless network is a kind of wireless sensor networks, which locates target by TDOA, while distributed positioning based on the algorithm of TDOA needs time synchronization strictly among nodes,This paper is focused on the strict time synchronization among nodes. Based on this thesis systemically analyzes the service environment, work mechanism and hardware platform of the distributed acoustic detection wireless network, then puts forward the sample synchronization and whole synchronization of the nodes, and finally presents the total solution for nodes synchronization of the distributed acoustic detection wireless network, based on the idea of postsynchronize and grading synchronization mechanism. The programme has been going on for network testing, it could solved effectively time synchronization problems of distributed detection. This paper has the guiding significance of engineering practices.

关 键 词：网络时间同步算法 无线传感器网络 分布式定位 声探测 节点同步 无线网络 整体解决方案 同步问题 

分 类 号：TN953[电子电信—信号与信息处理]