中文说明：给入例子，查阅近200左右的太阳黑子数，对其数据进行自相关分析，得到太阳黑子的周期，对于自相关为了判断其稳定性，又人为加入噪声检验一遍，确保了结论的可靠性。
English Description：
For example, access to nearly 200 of the sunspot number and the data autocorrelation analysis to obtain the sunspot cycle, for since related to judge its stability and artificially added noise test again, to ensure that the conclusions of the reliability of the.