In addition, wavelet was applied to denoise the tested signals, with favorable results. 同时，对所测振动信号进行了小波消噪处理，取得了较好的效果。
So it is essential that the hydrological time series are de-noised by wavelet method before chaos identification and prediction of the hydrologic system. 因此在对水文时间序列进行混沌分析和预测之前，对其进行小波消噪是完全必要的。
