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Atmospheric correction method and system

An atmospheric correction and atmospheric technology, applied in the field of atmospheric correction methods and systems, can solve problems such as atmospheric correction research without 4-band WFV cameras

Inactive Publication Date: 2016-06-15
SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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Problems solved by technology

However, there is no atmospheric correction research for high-resolution 4-band WFV cameras in the prior art

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] figure 1 It is a flowchart of the atmospheric correction method provided by the present invention. Such as figure 1 As shown, the atmospheric correction method provided by the present invention includes: in step S101, acquiring data from the WFV camera of the Gaofen-1 satellite. Specifically, the WFV camera of the GF-1 satellite has four bands of blue, green, red, and near-infrared, and the acquired data is geometrically corrected data of the four bands of blue, green, red, and near-infrared.

[0035] Next, in step S102, the apparent reflectance of each band pixel of the WFV camera is calculated according to the data. In a specific application, this s...

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Abstract

The invention discloses an atmospheric correction method and system. Wherein, the method includes: acquiring data from the WFV camera of the Gaofen-1 satellite; calculating the apparent reflectance of each band pixel of the WFV camera according to the data; using the radiation transfer mode and the WFV camera’s Correlation calculations are performed on the band response function, and the correction of the scattering difference of atmospheric molecules in different regions on the WFV camera remote sensing image is completed, and the corrected atmospheric parameters are obtained, thereby forming an atmospheric parameter lookup table; and according to the apparent reflectance and the atmospheric parameter lookup table Obtain the surface reflectance of each band pixel of the WFV camera to achieve atmospheric correction. The invention implements atmospheric correction based on the data of the WFV camera of the Gaofen-1 satellite, can quickly and conveniently obtain real surface reflectance, and provides a data source for quantitative applications.

Description

technical field [0001] The present invention relates to the technical field of atmospheric remote sensing, in particular to an atmospheric correction method and system. Background technique [0002] In the application of remote sensing data, especially in quantitative applications, eliminating the influence of atmospheric molecules, aerosols, absorbing gases and other factors on satellite observation data and completing atmospheric correction are important steps in remote sensing data processing. At present, the atmospheric correction based on the theoretical model of atmospheric radiative transfer has been more and more applied due to the advantages of clear principle, good versatility, and high precision. This method completes the atmospheric correction based on the radiative transfer theory, and can adapt to various ground-atmosphere conditions to obtain high-precision surface reflectance. However, this method needs to consider all atmospheric conditions for radiative tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C11/00
CPCG01C25/00G01C11/00
Inventor 王中挺厉青王桥周春艳陈辉张玉环马鹏飞张丽娟毛慧琴陈翠红
Owner SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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