（1）产生N（0,1）正态分布的随机过程；
（2）产生正态分布随机过程外的任意一种随机过程；
（3）对随机过程的性能进行评估，包括概率密度函数、分布函数、均值、方差和相关函数。((1) The stochastic process of generating N(0,1) normal distribution;
(2) generating any random process outside the normal distribution random process;
(3) evaluate the performance of random process, including probability density function, distribution function, mean value, variance and correlation function.)