State-Space Discretization of the Kalinin-Milyukov-Nash-Cascade in a Sample-Data System Framework for Streamflow Forecasting
Publication: Journal of Hydrologic Engineering
Volume 8, Issue 6
Abstract
A discretization of the continuous Kalinin-Milyukov-Nash-cascade is performed with the help of state-space analysis for hydrological forecasting of streamflow. A sample-data system approach is used during the discretization and results in discretely coincident values with the continuous model. The sample-data system uses input values measured instantly in time and assumes linear changes in the value of the input variable between discrete data measurements. Such description gives a generalized formulation of the pulse-data system approach often used in system engineering and discrete-time analysis of hydrological systems. An example is given to demonstrate that the approach results in improved forecasts of stream-discharge values when compared with the more traditional pulse-data system approach.
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Published In
Journal of Hydrologic Engineering
Volume 8 • Issue 6 • November 2003
Pages: 339 - 347
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 1, 2002
Accepted: Mar 3, 2003
Published online: Oct 15, 2003
Published in print: Nov 2003
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