State-space discretization of the Kalinin-Milyukov-Nash-cascade in a sample-data system framework for streamflow forecasting

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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.

Original languageEnglish
Pages (from-to)339-347
Number of pages9
JournalJournal of Hydrologic Engineering
Volume8
Issue number6
DOIs
Publication statusPublished - Nov 1 2003

Keywords

  • Forecasting
  • Hydrologic data
  • Hydrologic models
  • Measurement
  • Streamflow

ASJC Scopus subject areas

  • Environmental Chemistry
  • Civil and Structural Engineering
  • Water Science and Technology
  • Environmental Science(all)

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