论文标题
在太阳能活动中的采样图和虚假周期中循环的稳定性
Stability of cycle in samplogram and spurious cycles in solar activity
论文作者
论文摘要
具有随机意义的光谱分析无法有效区分伪周期，因为非平稳信号可以在光谱中占据显着峰值。我表明，在太阳活动中，大极端和最小值等大极端之间的随机分离可以使频谱中虚假但显着的高峰。而且，可以通过将平均下采样和差异应用于随机信号来挑选弱稳定周期。这是因为这两个操作都会改变频谱中峰值的高度，而在两个操作中，虚假循环又不稳定。我引入了一个采样图，显示了这些操作和稳定性。
The spectral analysis with stochastic significance cannot distinguish the spurious cycles effectively, because a non-stationary signal can make a significant peak in spectrum. I show that the random separation between the grand extremes such as grand maxima and minima in solar activity can make a spurious but significant peak in spectrum. And it is possible to pick even the weak stable cycle by applying an averaging down-sampling and the differencing to a random signal. This is because both operations variously change the height of peak in spectrum and the spurious cycle is in turn unstable in both operations. I introduce a samplogram showing these operations and stability intuitively.
