关键词: 无线传感器网络时间同步, 平均值, 线性回归, 最小二乘法

Abstract: This paper improves the TPSN synchronization algorithm in order to achieve the purpose of continuing improving the accuracy of synchronization. In order to improve the accuracy of algorithm, it presents two improved algorithms, one is to calculate the average value among some synchronization data to overcome the impact of noise, another is to use the linear regression method to consider the impact of offset time. Experiments show that both of them can improve the synchronization accuracy while not changing the original synchronization mechanism.

Key words: time synchronization for wireless sensor network, average, linear regression, least square method