去趋势波动分析，用于信号分析，可以用于信号去噪，检测信号序列的相关性，内有源码及参考资料一篇-DFA analysis is used to analysis the signal.besides,it can also be used to test the conssitency of the input signal series.

这是Man-kandell趋势突变检验，可用于时间序列的趋势与突变点的检测(man-kandell trend test and mutation plot)