中文说明：相关函数表示两个或同一个时间序列之间在任意两个不同的时刻取值之间的相关程度。相关程度越大,相关函数值就越大。用MATLAB对上述相位测量方法进行仿真,考察序列长度和噪声的相关性对测量结果的影响。
English Description：
correlation function reprents the relations between two values of two sequences or two values from different time from of the same sequence. The correlation function is larger if the dependencies of the two variables are larger.The code in matlab stimulates the above phase measurement method to observe the influence of length and nosice on the correlation