Method for measuring and calculating black and odorous degree of water body based on foundation hyperspectral remote sensing

Abstract

The invention belongs to the technical field of ecological environment monitoring, and particularly relates to a method for measuring and calculating the black and odorous degree of a water body based on foundation hyperspectral remote sensing, which comprises the following steps of: measuring a sensitive wavelength reflectivity curve of a target water body through a foundation hyperspectral imager, and extracting specific wavelength remote sensing reflectivity to calculate CIE tristimulus values and corresponding coordinates; then, the chromaticity angle theta of the target coordinate is calculated, the water body state is preliminarily distinguished according to the chromaticity angle theta corresponding to the distinguishing standard, and different measuring and calculating methods are further adopted according to different water body influence factors when the water body is in the special influence factor water body state, such as green or yellow, so that the target water body state is further measured and calculated; whether the water body is in a light black and odorous water body or a conventional state under the water body is judged, so that refined treatment of the water body is better met.

Description

technical field [0001] The invention belongs to the technical field of ecological environment monitoring, and in particular relates to a method for calculating the black and odor degree of water bodies based on ground-based hyperspectral remote sensing. Background technique [0002] Urban black and odorous water bodies are water bodies that show unpleasant colors or emit unpleasant odors in urban built-up areas. The black odor of water bodies is a biochemical phenomenon. When the water bodies are seriously polluted, organic The aerobic decomposition makes the oxygen consumption rate in the water body greater than the reoxygenation rate, resulting in anoxic water body, resulting in incomplete degradation of organic matter, and odorous substances such as hydrogen sulfide, ammonia, and mercaptan are generated in the process of anaerobic biodegradation, and at the same time the formation of sulfide Iron, manganese sulfide and other black substances cause black and odorous water ...

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of industry and agriculture in my country, the trend of black and odorous water bodies in urban built-up areas is becoming more and more serious, and the degree of black and odorous water bodies in different locations is different. How to identify black and odorous water bodies quickly, accurately and on a large scale, and then put forward relevant information in a timely manner. Management measures are particularly important, but the traditional detection methods are mostly on-site sampling and preservation, and then take them to the laboratory for water quality analysis, and finally identify the degree of black and odor in the water according to the standards given in the "Guidelines". This method is not only time-consuming It is manpower-intensive, and the monitoring range is not large enough to provide timely feedback on the blackness and odor of the water body. With the progress of the times, this method is particularly insufficient in solving the problem of blackness and odor of the water body. Compared with it, remote sensing technology can solve these problems more effectively

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