Prediction of underground water based on chaotic time series
Yihe Xu · Journal of Water Resources and Water Engineering · 2010
Based on phase-space reconstruction theory and the predication theory of chaotic time series,this paper used the G-P algorithm,C-C methods and small data sets to extract Lyapunov index from one-dimensional time series of groundwater depth in Wuwei Basin,and the Lyapunov index indicated that the time series is possessed of chaotic state.Therefore,the first order weighted local predication model of chaotic time series was built,which was used to predicate the groundwater depth in Wuwei Basin and got the conclusion that the model had a high predication accuracy and could effectively predict the dynamic of groundwater depth.