摘要
在原有相应涨差河道洪水预报模型的基础上 ,利用差分方法推导出仅用下游站流量或水位资料表达的改进型相应涨差模型。并用具有可变遗忘因子的递推最小二乘实时校正算法对模型参数进行在线识别。该模型用于长江枝城至监利河段的实际预报检验 ,证明模型结构合理 ,算法简捷 ,成果令人满意。
On the basis of the flood forecast model of river course with the original corresponding tide range, it use differential method to develop the modified model with corresponding tide range expressed only by the flow or water level information in the down reaches station. At the same time, it makes on line distinguishing of the model parameters by recursion minimum quadratic multiplication real time correction algorithm with changeable forget factor. The model is used for examining the actual forecast of the Changjiang River sector from ZhiCheng to Jianli to prove the model has a reasonable structure, simple algorithm and satisfactory result.
出处
《城市道桥与防洪》
2001年第1期36-38,共3页
Urban Roads Bridges & Flood Control
关键词
河道洪水预报模型
相应涨差
差分法
递推最小二乘法
flood forecast, corresponding tide range, differential method, recursion minimum quadratic multiplication method
