Remote sensing inversion method and system for concentration of photoactive heavy metal in water body

Abstract

According to a remote sensing inversion method and system for the concentration of the photoactive heavy metal in the water body, the radiation brightness of scattered light of the whole-layer water body containing the heavy metal and the radiation brightness of reflected light of the water bottom are obtained by considering the interaction between the heavy metal in the water body and electromagnetic waves through the radiation transfer theory, and according to the radiation brightness of the scattered light and the reflected light of the water bottom, a water body heavy metal concentration remote sensing inversion physical analysis model is constructed, a remote sensing extraction method overcomes the defects that time and labor are consumed and synchronism is poor due to the fact that manual on-site sampling is needed in the prior art, the method has the characteristic of space continuity, and the model has the advantages of being high in scientificity and independent of sensor types; the adopted hyperspectral image is subjected to heavy metal sensitive wave band selection and substituted into a model to establish an equation set for solving, final water body heavy metal inversion is achieved, the blank of a water body heavy metal remote sensing theory is filled, and a remote sensing extraction result is beneficial to discovering the position of a heavy metal pollution source and the influence range thereof, and valuable reference basis is provided for government departments such as environmental protection and water conservancy to treat the water environment.

Description

technical field [0001] The invention relates to the technical field of satellite remote sensing, and more specifically, to a remote sensing inversion method and system for the concentration of photoactive heavy metals in a water body. Background technique [0002] The monitoring of heavy metal concentration in water has always relied on manual sampling in the field, chemical analysis in the laboratory or the use of online automatic monitoring instruments to achieve continuous monitoring. Synchronization is poor and other problems, and the use of remote sensing technology can just make up for the above shortcomings. [0003] At present, the way of using remote sensing technology to monitor heavy metals in water is still in its infancy and theoretical research stage, and there is still a long way to go to practice. Scholars such as Chen calculated the correlation coefficient between the concentration of heavy metals (copper, lead, zinc) in the Pearl River Estuary of Guangdong...

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Problems solved by technology

[0005] In order to solve the problem of limited application conditions and no universal applicability of the water heavy metal remote sensing inversion model established by empirical methods, the present invention proposes a water body photoactive heavy metal The remote sensing inversion method and system of concentration has strong universality and high scientific value, laying a foundation for filling the theoretical gap of remote sensing of heavy metals in water

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