Segmental statistics-based atmospheric aerosol inversion method

Abstract

The invention discloses a segmented statistics-based atmospheric aerosol inversion method and belongs to the technical field of remote sensing information. According to the method of the invention, an aerosol optical thickness lookup table corresponding to multi-waveband remote sensing images and inversion wave bands is obtained; pixels are classified and screened according to the apparent reflectance interval of a mid-infrared 2.1 micron waveband; and an obtained pixel set is further classified and screened according to the apparent reflectance interval of a mid-infrared 1.6 micron waveband, and a finally obtained pixel set is classified into two types according to the number of pixels, a pixel type having more pixels is classified as a type A, and the other type is classified as a type B; and inversion is carried out with the pixel type having more pixels adopted as a reference part, inversion is carried out with the surface reflectance of a clean section adopted as the surface reflectance of the whole pixel set, so that an aerosol thickness value is obtained, and inversion is performed on the other type with the pixels adopted as reference. Compared with a traditional dark pixel algorithm, the method has a good inversion effect for bright surface areas. The method has a wider application range.

Description

technical field [0001] The invention belongs to the technical field of remote sensing information, and more specifically relates to an atmospheric aerosol inversion method based on segmentation statistics. Background technique [0002] Atmospheric aerosol refers to the multiphase system composed of the atmosphere and the solid and liquid particles suspended in it. It refers to the particles suspended in the earth's atmosphere with certain stability and low sedimentation velocity, and the scale ranges from microns to tens of microns. A mixture of molecular clusters, liquid or solid particles. Aerosol particles mainly come from man-made sources such as industrial activities and biological combustion, as well as natural sources such as dust and offshore marine particles. [0003] Studies have shown that atmospheric aerosols not only affect the radiation balance of the earth's surface system, but also adjust the reflectivity of the earth-atmosphere system through the scattering...

AI Technical Summary

Problems solved by technology

However, most of the current inversion algorithms are aimed at aerosols with large-scale average properties, and have many limitations, for example, they are only applicable to the dark surface

At present, there is no effective aerosol retrieval algorithm suitable for bright surface areas such as cities

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