Automatic calibration method for hydrological model parameters in data-free region

A hydrological model and parameter calibration technology, applied in genetic models, neural learning methods, biological neural network models, etc., can solve problems such as poor accuracy of model parameters, and achieve the effect of improving accuracy

Pending Publication Date: 2021-01-01
GUIZHOU EAST CENTURY SCI TECH CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic calibration method for hydrological model parameters in areas without data, so as to solve the problem that the hydrological parameters of watersheds without data are calculated and analyzed through the parameters of the hydrological model in areas with data, and finally the area without data is obtained. Hydrological model parameters, using this method, there are problems such as poor accuracy of model parameters

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  • Automatic calibration method for hydrological model parameters in data-free region
  • Automatic calibration method for hydrological model parameters in data-free region
  • Automatic calibration method for hydrological model parameters in data-free region

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Embodiment Construction

[0034] A method for automatic calibration of hydrological model parameters in data-free areas, comprising:

[0035] Step 1. Select the hydrological model parameters to be calibrated;

[0036] The method for selecting the hydrological model parameters to be calibrated is as follows: determining the hydrological model parameters to be calibrated according to the sensitivity of the hydrological model parameters.

[0037] The hydrological model parameters that need to be calibrated are shown in Table 1:

[0038] Table 1

[0039]

[0040] Implement as follows:

[0041] 1) Establish an initial population, set SN individuals for each group, and set AN chromosomes for each individual, wherein each chromosome corresponds to the corresponding hydrological model parameters on the sub-watershed, and the value of the initial chromosome is randomly generated within the corresponding parameter range;

[0042] 2) The population update strategy is:

[0043] ·Sort the individuals of the ...

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Abstract

The invention discloses an automatic calibration method for hydrological model parameters in a data-free region. The method is based on model data and precision data of a calculation unit, recorded ina data-containing region parameter calibration process and is combined with geographic feature data of a data-free region calculation unit. The method comprises the steps of using a deep neural network regression model in machine learning to establish a relationship model of geographic feature data, model data and precision data of a calculation unit, and using the relationship model to derive hydrological model parameters and realize the calibration of a data-free region. The problems that in the prior art, statistics and analysis are conducted on hydrological parameters of a data-containingbasin through hydrological model parameters of a data region to finally obtain hydrological model parameters of the non-data area, and the accuracy of the model parameters is too poor when the methodis adopted are solved.

Description

technical field [0001] The invention belongs to hydrological parameter calibration technology, in particular to an automatic calibration method for hydrological model parameters in areas without data. Background technique [0002] The watershed hydrological process system is time-varying and uncertain, which determines that the parameters of the hydrological model have the same uncertainty and time-varying characteristics. Especially when the underlying surface conditions of the watershed change, in order to obtain more accurate forecast results, it is necessary to periodically Or make calibration corrections to the model parameters from time to time; the parameter setting of the hydrological model model is very important to the accuracy of the hydrological model simulation. In the existing technology, when the specific application is aimed at the watershed without data, the hydrological model parameters of the area with data are used for statistics and analysis, and finally...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F30/20G06N3/08G06N3/12G06K9/62G06F17/18G06F113/08
CPCG06F30/27G06F30/20G06N3/08G06F17/18G06N3/126G06F2113/08G06F18/23G06F18/214
Inventor 李胜张荣刘晟一田彪丁交亮罗国鹏刘继军
Owner GUIZHOU EAST CENTURY SCI TECH CO LTD
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