Transparency Inversion Method of International Boundary Lake Based on Multi-source Remote Sensing Satellites

Abstract

The invention discloses an international boundary lake transparency inversion method based on multi-source remote sensing satellites, which belongs to the field of environmental science and remote sensing monitoring technology. Firstly, sample points are evenly arranged in the domestic waters of the international boundary lake to obtain a large amount of measured SDD data in different periods; secondly, the relative band water surface remote sensing reflectance of different remote sensing satellites is obtained; then, the matched point pairs are divided into modeling group and verification group; thirdly, using the water surface remote sensing reflectivity of the relevant bands of the modeling group and different remote sensing satellites, construct SDD remote sensing inversion models suitable for different satellite remote sensing images, and use the data of the verification group to evaluate the accuracy of the model; finally, Select different remote sensing images on the same day, perform remote sensing inversion separately, and evaluate the consistency of the inversion results obtained by different sensors. The invention can obtain the SDD of the whole lake at one time by studying the SDD through the remote sensing satellite image, has strong timeliness and is easy to operate, and can improve the application range of the remote sensing image inversion method.

Description

technical field [0001] The invention belongs to the field of environmental science and remote sensing monitoring technology, and relates to a method for estimating the transparency of lakes and reservoirs based on multi-source remote sensing images, especially how to invert and verify the model accuracy of lakes and reservoirs located on the national border of my country based on multi-source remote sensing satellite data . Background technique [0002] The water transparency (Secchi disk depth, SDD) of lakes and reservoirs is defined as: put a white or black and white circular plate with a diameter of about 30cm vertically into the water, and it just reaches the depth that the naked eye can’t see, which is the depth of the water body. SDD [Tyler, J.E. The secchi disc. Limnology and oceanography 13, 1-6 (1968)]. The SDD of a lake or reservoir is one of the basic parameters to describe the optical characteristics of lake or reservoir water. It can directly reflect the degree ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the field sampling of the international boundary lake can only obtain part of the waters, and the foreign waters cannot be collected, so that the estimation accuracy of the SDD model of the foreign waters cannot be verified, and a remote sensing estimation model for the SDD of the international boundary lake is invented. , and proposed a method for verifying the accuracy of remote sensing inversion models based on the inversion results of multi-source remote sensing satellites

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