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Atmosphere correction method of airosol optical thickness of aeronautical high-spectrum remote-sensing inversion boundary layer

A technology of hyperspectral remote sensing and atmospheric correction, applied in the field of atmospheric correction of thickness

Inactive Publication Date: 2005-12-21
EAST CHINA NORMAL UNIVERSITY
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Problems solved by technology

[0008] The technical problem to be solved in the present invention is: to solve the problem of radiometric calibration of hyperspectral remote sensing images; to solve how to select dark targets on the 0MIS image of the practical modular imaging spectrometer of aerial hyperspectral remote sensor, how to obtain the performance reflectance, reflective Perform the calculation of the boundary layer aerosol optical depth and other issues; how to extract the boundary layer aerosol optical depth information from the atmospheric transmission spectrum and carry out atmospheric correction and other related technical problems

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  • Atmosphere correction method of airosol optical thickness of aeronautical high-spectrum remote-sensing inversion boundary layer

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specific Embodiment

[0186] The specific embodiment of atmospheric correction of the present invention is as follows:

[0187] Please refer to the attached figure 2 , 3 , 4, 5, and 6, the dark target was selected for the OMIS hyperspectral image of the practical modular imaging spectrometer in Shanghai on October 7, 2002, and according to the technical flow chart of the present invention, the inversion of the aerosol optical depth, first through step 1 The DN value of the OMIS hyperspectral image of the practical modular imaging spectrometer is converted into a radiation value, and the dark surface (corresponding to the polluted water body on the Huangpu River) is selected according to the size of the radiation value. figure 2 It is a sketch of the position shown in the dark surface in the embodiment; image 3 is the apparent reflectance curve of the dark surface at 13 o'clock and 14 o'clock respectively, the x-axis is the wavelength (nanometer), and the y-axis is the apparent reflectance; the...

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Abstract

A method for inverting optical thickness of boundary layer aerosol includes picking up boundary layer aerosol optical thickness data from atmosphere transmission spectrum by utilizing transmission and radiation principle of atmosphere, obtaining expression reflectivity by carrying out reinterpolation for atmosphere and aerosol modes in boundary layer, thus realizing inversion of calculation for boundary layer aerosol optical thickness . The atmospheric calibration can be carried out based on result calculated out by above method.

Description

technical field [0001] The invention relates to an atmospheric correction method for aerial hyperspectral remote sensing inversion of boundary layer aerosol optical thickness. The method is applied to the hyperspectral image obtained by the aerial hyperspectral remote sensor developed by the Aeronautical Remote Sensing Laboratory of Shanghai Institute of Technical Physics, Chinese Academy of Sciences. Through The atmospheric correction method based on the radiation transfer mechanism realizes the inversion of the aerosol optical thickness of the urban atmospheric boundary layer, which belongs to the application field of atmospheric environment remote sensing. Background technique [0002] Atmospheric aerosols refer to solid or liquid particles suspended in the atmosphere with a radius of less than tens of microns. Aerosols play an important role in the Earth's atmospheric radiation balance and global climate, and are important research objects in atmospheric physics. On the ...

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Application Information

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IPC IPC(8): G01B21/08
Inventor 孙娟段玉森束炯
Owner EAST CHINA NORMAL UNIVERSITY
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