Multi-Steps Prediction Model of Underground Water Table Based on Chaotic Time Series
LI Song-hai · Journal of Earth Sciences and Environment · 2007
Applying phase space reconstruction method,G-P arithmetic,C-C arithmetic and Wolf method,this paper distills Lyapunov exponents from one-dimension time series of underground water table in Ningling county.The result indicates that this time series possesses the character of chaos.The correlation dimension of time series,time delay and the largest Lyapunov exponent of underground water table in Ningling county are calculated.The add-weighted one-rank multi-steps prediction model is developed for the prediction of underground water table.The prediction indicates that this model can be easily used in multi-steps prediction of underground water table time series.