基于分簇技术的水下声传感器网络的时钟同步研究

Study on the clock synchronization of underwater acoustic sensor networks based on the clustering technology

摘要:

时钟同步是水下传感器网络节点协作的必要条件。不同于陆地传感器网络,水声信道具有随机的时频变化,声信号传播速率低,具有很大的时延。本文首先研究了水下传感器网络的分簇技术,在分簇的传感器网络中,实现了适用于水下的发送端—接收端的同步协议。通过MATLAB,利用水下声传播特性公式,对水下传感器网络的时钟同步能耗与同步精度之间的关系进行模拟仿真。最后得出了结论,证明了本文的研究意义。

Abstract:

Clock synchronization is necessary for the collaboration of underwater sensor networks nodes(UWSN) .It’s different from the wireless networks that random changes in time and frequency in underwater acoustic channel, and the propagation delay is large for the low-speed of acoustic signal. This paper researches the clustering technology of UWSN, and achieves the synchronization protocol (Sender-Receiver) which is suitable for UWSN(after clustering).Using the underwater acoustic propagation formula, the paper simulates the energy consumption and accuracy of the clock synchronization with MATLAB. Finally, the conclusion prove the meaning of this paper.