摘要
无线传感器网络的正常工作，离不开节点时间同步技术的支撑。针对无线传感器网络时间同步技术的能耗和精度问题，在深入总结现有时间同步算法性能的基础上，结合现有研究，提出一种低能耗、高精度的时间同步算法——TPTS—Bayes算法。该算法利用Bayes数学方法来解决消息传递延时和节点接收不稳定的问题，从而减少同步误差，提高同步精度。仿真实验表明，该算法不但满足了低能耗的设计要求，而且具有较高的同步精度，满足了大多数WSNs的应用需求。
Abstract.The proper functioning of wireless sensor networks is inseparable for the support of time synchronization technology. In consider of energy consumption and precision in time synchronization technology of wireless sensor network, based on the in-depth summary of the performance of the existing time synchronization algorithm, and combined the typical time synchronization algorithm, a low-power, high-precision time synchronization algo- rithm, TPTS-Bayes algorithm had been proposed. The algorithm used Bayes mathematical methods to solve the problem of messaging latency and node receives instability, so as to re- ducing synchronization errors and improving synchronization accuracy. Simulation results show that the algorithm not only meet the low-power design requirement, but also has high synchronization accuracy to fulfill the application requirements of most WSNs.
出处
《武警工程大学学报》
2016年第2期9-12,共4页
Journal of Engineering University of the Chinese People＇s Armed Police Force
关键词
无线传感器网络
时间同步
TPSN算法
贝叶斯估计
能耗
同步精度
wireless sensor networks （WSNs）
time synchronization
TPSN algorithmBayesian estimation
energy consumption
synchronization accuracy
