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Quantitative inversion method for reservoir water quality parameters based on aerial hyperspectral data

A technology of water quality parameters and spectral data, applied in the direction of color/spectral characteristic measurement, water testing, measuring devices, etc., can solve problems such as large investment, low efficiency, and discontinuous data, achieve high accuracy, overcome low efficiency, and be applicable wide range of effects

Inactive Publication Date: 2020-01-10
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a quantitative inversion method for reservoir water quality parameters based on aerial hyperspectral data to solve the technical problems of low efficiency, large investment and discontinuous data in the field sampling and analysis method in the prior art.

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  • Quantitative inversion method for reservoir water quality parameters based on aerial hyperspectral data

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Embodiment Construction

[0026] In order to better illustrate a method for quantitative inversion of reservoir water quality parameters based on aerial hyperspectral data designed by the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples:

[0027] Step 1, aerial hyperspectral data acquisition and preprocessing:

[0028] In this example, the HyMap aerial hyperspectral data is obtained, including 128 bands, and the wavelength range is 350-2500nm. In practical applications, AISA, CASI / SASI or other aerial hyperspectral measurement systems can also be used to obtain aerial hyperspectral data of the target area.

[0029] Data preprocessing mainly includes radiation correction, geometric correction and atmospheric correction. Radiation correction is to convert the acquired original aerial hyperspectral data from DN value to radiance value. The specific method is to use the built-in software and calibration pa...

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Abstract

The invention belongs to the technical field of water quality remote sensing monitoring, and particularly relates to a quantitative inversion method for reservoir water quality parameters based on aerial hyperspectral data. The quantitative inversion method comprises the following operation steps: (1) acquiring and pre-processing aerial hyperspectral data; (2) acquiring water quality parameter data; (3) acquiring and pre-processing water surface spectral data; (4) analyzing correlation between the water quality parameters and the water surface spectral data; (5) constructing a hyperspectral inversion model of water quality parameters; (6) outputting an inversion result of water quality parameters; (7) verifying the inversion result of water quality parameters. The method combines aerial hyperspectral remote sensing with water quality monitoring, can overcome shortcomings such as low efficiency, large investment and discontinuous data in traditional field sampling and analysis methods,and obtains the model with simpleness, high efficiency and high accuracy, convenience to continuously monitor water quality parameters in fixed areas and wider application scopes.

Description

technical field [0001] The invention belongs to the technical field of water quality remote sensing monitoring, and in particular relates to a method for quantitative inversion of reservoir water quality parameters based on aerial hyperspectral data. Background technique [0002] The shortage of inland fresh water resources and water pollution in our country have aroused great concern of the state and society. Especially for inland water bodies, the water quality is closely related to national production and life, so fast and accurate water quality monitoring is very important. Traditional water quality monitoring methods generally consume a lot of manpower, material resources, and financial resources for on-site sampling and analysis, and the data obtained are discontinuous, which makes it difficult to meet the needs of large-scale and high-efficiency water quality monitoring. With its unique advantages, remote sensing technology provides a new way for water quality monito...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18G01N21/25
CPCG01N21/25G01N33/18G01N2021/1793
Inventor 田青林潘蔚李瀚波陈雪娇余长发
Owner BEIJING RES INST OF URANIUM GEOLOGY
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