| Tide Forecasting of Tides Around Taiwan by Artificial Neural Network Method and Wavelet Analysis |
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| 作者姓名： | Bang-Fuh CHEN |
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| 作者单位： | Department of |
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| 基金项目： | This work was financially supported by the Science Council of Taiwan(Grant No.NSC90-2611-M-110-012) |
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| 摘 要： | In multiresolution analysis(MRA)by wavelet function Daubechies(db),we decompose the signal to two parts,the low and high frequency content.The high-frequency content of the data is removed first and a new "de-noise" signal is reconstructed by using inverse wavelet transform.The wavelet spectrum and harmonic analysis were used to analyze the characteristics of tidal data before constructing the input and output structure of ANN model.That is,the concept of tidal constituent phase-lags was introduced and the new "de-noise" signal was used as the input data set of ANN and the forecasting accuracy of ANN model is significantly improved.
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| 关 键 词： | 人工神经系统 波浪 分析方法 预测方法 |
Tide Forecasting of Tides Around Taiwan by Artificial Neural Network Method and Wavelet Analysis |
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| Bang-Fuh CHEN.Tide Forecasting of Tides Around Taiwan by Artificial Neural Network Method and Wavelet Analysis[J].China Ocean Engineering,2007,21(4):659-675. |
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| Authors: | Bang-Fuh CHEN Chu Chi CHUN D WANG |
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| Institution: | Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung 804, China |
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| Abstract: | In multiresolution analysis(MRA)by wavelet function Daubechies(db),we decompose the signal to two parts,the low and high frequency content.The high-frequency content of the data is removed first and a new "de-noise" signal is reconstructed by using inverse wavelet transform.The wavelet spectrum and harmonic analysis were used to analyze the characteristics of tidal data before constructing the input and output structure of ANN model.That is,the concept of tidal constituent phase-lags was introduced and the new "de-noise" signal was used as the input data set of ANN and the forecasting accuracy of ANN model is significantly improved. |
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| Keywords: | artificial neural network wavelet analysis tide prediction |
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