| 葛守西,程海云,李玉荣.水动力学模型卡尔曼滤波实时校正技术[J].水利学报,2005,36(6):0687-0693 |
| 水动力学模型卡尔曼滤波实时校正技术 |
| Real time updating of hydrodynamic model by using Kalman filter |
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| DOI： |
| 中文关键词: 水动力学模型 卡尔曼滤波 实时校正 状态向量 |
| 英文关键词: hydrodynamic model Kalman filter real time updating state variables |
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| 摘要点击次数: 3399 |
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| 中文摘要: |
| 本文采用卡尔曼滤波技术实现圣维南方程实时校正以提高水动力学模型应用于洪水预报的精度水平。首先利用有限差分方法将圣维南方程进行离散化并线性化，选择不同的状态变量组建了三种卡尔曼滤波状态空间方程，对预报进行实时校正。选择长江干流清溪场至万县河段进行试算，证实此方法对提高预报精度的效果显著。 |
| 英文摘要: |
| The Kalman fiter was applied to realize the real time updating of Saint-Venant equation for promoting the accuracy of flood forecasting. The discretization and linearization of Saint-Venant equation were carried out by means of finite difference method. Three kinds of kalman filter spatial equation were established by using different state variables for real time updating. The calculation of flood forecasting for river section from Qingxichang to Wanxian of Yangtze River verifies that the proposed method can remarkably promote the accuracy of forecasting. |
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