Method for extracting river monitoring section water surface width based on remote sensing interpretation technology

Abstract

The invention discloses a method for extracting the river monitoring section water surface width based on a remote sensing interpretation technology, and the method comprises the steps: building a Bi-LSTM model, and obtaining river flow data; and constructing a watercourse water surface width hydraulic model: solving coefficients of the watercourse water surface width hydraulic model based on remote sensing detection and a linear fitting method to obtain an optimal watercourse water surface width hydraulic model, and solving a high-precision watercourse section water surface width expression.Compared with a traditional method of directly utilizing a remote sensing technology to collect the water surface width of the river section, linear fitting is adopted, data with large errors are effectively removed, the calculation precision is improved, and the hydraulic function relation between the water surface width of the river section and the flow is truly reflected.

Description

technical field [0001] The invention belongs to the technical field of water resources, and in particular relates to a method for extracting the water surface width of a river monitoring section based on remote sensing interpretation technology. Background technique [0002] With the accelerated development and utilization of river water resources, river ecological and environmental problems have become increasingly prominent, and the concept of ecological flow has also been widely used. Due to the different perspectives and focuses of researchers, many concepts related to ecological flow have emerged, such as "water ecological water demand", "water ecological base flow", "minimum discharge flow" and "water demand for river ecological environment". In Australia and South Africa, the basic meaning of ecological flow is to maintain the ecological integrity and biodiversity of the river. In other words, ecological flow is the amount of water left for the river's own water needs...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a method for extracting the width of the water surface of a river monitoring section based on remote sensing interpretation technology, so as to solve the problem that the existing remote sensing monitoring of the water surface width of a river section has a large error and cannot truly reflect Questions about the relationship between the water surface width of the river section and the flow rate

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