用小波分解算法计算脉冲星时间尺度

Calculate Pulsar Time Scale Using Wavelet Decomposition

在计算脉冲星时间尺度时一般沿用现有的经典原子时算法，采取在时域统一加权的方法，然而不同的脉冲星短期稳定度和长期稳定度截然不同，采用此种加权方法不能兼顾脉冲星在不同频率范围内的不同稳定度。采用小波分解算法可以考虑脉冲星在不同频率范围的不同稳定度。实验结果表明：用这种算法计算的脉冲星时间尺度稳定度有显著提高。

To calculate pulsar time scale, The traditional method is same with atomic time scale algorithm. These algorithm limited by the single weight for every pulsar. Because the stability of every pulsar is different awfully in different frequency range, one weight can't consider all stability. In this paper, a new algorithm梂avelet Decomposition Algorithm are given. This Algorithm can consider all the stability. The experiment result shows that: the stability of time scale that calculated with this algorithm is better than other.