Research of Exponentially Filter in Atomic Time Scale Algorithm

摘要：

The settings and effects of exponentially filter in the Atomic Time 1(AT1) scale algorithm is researched in this paper. The different effects of time scale algorithm with an exponentially filter or no exponentially filter is discussed. Simulations verified that the exponentially filter makes the result better. Then how to choose the exponential frequency-weighting time constant is discussed. This parameter is determined from the relative levels of white noise and random walk (or flicker) for clock. Different numerical value gives different results. Compared with a series of numerical values, the optimal value of each clock is given in this paper. On the basis of these works, exponentially filter optimized the AT1 time scale algorithm by estimating of the current average frequency of clock. Waveform figures are given and some valuable conclusions are drawn.

关键词： exponentially filter atomic time scale AT1 algorithm

作者: Zhang Lili Liu Mingliang Zhu Jiangmiao

作者单位: School of Electronic Information and Control Engineering,Beijing University of Technology,Beijing,100022,China

会议类型: 国际会议

会议名称: 第八届国际电子测量与仪器学术会议(Proceedings of 2007 8th International Conference on Electronic Measurement & Instruments)

会议地点: 西安

会议语种:英文

在线出版日期: 2007-08-16（万方平台首次上网日期，不代表论文的发表时间）