Half Self Adaptive Updating Kalman Filter Model of Channel Flow Routing

Based on the Kilman filter theory and Muskingum method,the half-self adaptive updating Kilman filter model of channel flow routing has been developed for real time application of flood forecasts.In the model,the measurement error covariance matrix can be estimated in real time throught on the innovation sequence. A reasonable and simple model is used in the inflowerrors.The examples show the model are reasonable.