关键词: 无线传感器网络, 时间同步实现, 洪泛

Abstract: In this paper，a flooding time synchronization protocol based on send-send theory is proposed，which uses the single synchronization grouping to realize the synchronization between a couple nodes.This algorithm is robust and adaptive to characters of sensor network.The contribution of this paper is that the authors design and implement the software of time synchronization on real sensor nodes，and control the error within microsecond，which has great profit for the real environment of sensor network.

Key words: wireless sensor network, time synchronization implementation, flooding