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Inland water chlorophyll a concentration remote-sensing monitoring method based on segmenting cooperation model

A chlorophyll and model technology, which is applied in the measurement of color/spectral characteristics, etc., can solve the problems of large errors and affect the inversion accuracy of the chlorophyll a model, and achieve the effect of improving the monitoring accuracy, solving the phenomenon of concentration difference and spatial dislocation, and the method is simple.

Inactive Publication Date: 2009-07-08
REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI
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Problems solved by technology

When inverting the chlorophyll a concentration with a small statistical weight contribution, the error is large, which seriously affects the inversion accuracy of the chlorophyll a model

Method used

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  • Inland water chlorophyll a concentration remote-sensing monitoring method based on segmenting cooperation model

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Embodiment Construction

[0018] The present invention utilizes satellite remote sensing data to monitor the technical flow chart of inland water body chlorophyll a concentration as follows figure 1 shown. Using this method, the technical process for monitoring the concentration of chlorophyll-a in inland water based on satellite remote sensing data is as follows:

[0019] ① Determine the threshold

[0020] Utilize the optical physics mechanism of chlorophyll a in water body, deeply analyze and determine the quantitative characteristics of the optical absorption characteristics of chlorophyll a with the variation of concentration, determine the segmental reference index and index threshold of remote sensing spectrum, establish the discrimination criterion, and determine the segmental model threshold of spectral reflectance .

[0021] ②Build a segmented model

[0022] Using the method of statistical theory and under the guiding principle of concentration gradient, the inversion model and algorithm of...

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Abstract

The invention provides a remote sensing monitoring method for the concentration of chlorophyll a in an inland water body based on a sectional coordination model. Aiming at the defects and disadvantages in remote sensing monitoring technology for of the concentration of the chlorophyll a, the invention provides the method which combines the advantage that an optical physical mechanism of the water body of the chlorophyll a can perform quantitative theoretical analysis and the advantages of simple calculation and high accuracy of a statistical correlation model. The method is characterized in that the method comprises four units, namely a threshold determination unit, a sectional coordination model unit, a model connection unit and a model calculation unit. The technical method jointly formed by the four units can effectively improve the inversion accuracy of remote sensing data to the chlorophyll a.

Description

technical field [0001] The invention belongs to the field of environmental monitoring, especially the technical field of remote sensing monitoring of chlorophyll-a concentration in inland water bodies. Background technique [0002] The remote sensing inversion methods (physical methods, empirical methods and semi-empirical methods) of chlorophyll concentration a in inland water bodies can be classified into two categories: one is a physical model based on the theory of optical radiative transfer in water bodies, such as physical methods, and the other is Statistical models based on correlation calculations, including empirical and semi-empirical methods. [0003] The physical method is based on the theory of radiative transfer, based on the calculation of the quantitative relationship between the uplink and downlink radiation and the absorption and backscattering of optically active substances in the water body, and the remote sensing spectrum is used to invert the chlorophy...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 周艺王世新阎福礼王丽涛杜聪
Owner REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI
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