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Physical method for computing atmospheric path radiance of satellite remote sensing images through picture elements one by one

A technology of satellite remote sensing image and atmospheric path radiation, which is applied in the direction of utilizing re-radiation, electromagnetic wave re-radiation, measuring device, etc.

Active Publication Date: 2014-09-17
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a physical method for calculating the atmospheric radiation of satellite remote sensing images pixel by pixel, so as to overcome the deficiencies of existing methods, thereby promoting the development of remote sensing applications in related fields

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  • Physical method for computing atmospheric path radiance of satellite remote sensing images through picture elements one by one
  • Physical method for computing atmospheric path radiance of satellite remote sensing images through picture elements one by one
  • Physical method for computing atmospheric path radiance of satellite remote sensing images through picture elements one by one

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Embodiment Construction

[0039] Atmospheric-path radiation is the combined result of Rayleigh scattering and aerosol Mie scattering, and the total atmospheric-pass radiation reaching the sensor can be regarded as the integral of atmospheric up-going radiation on the surface-sensor path ( figure 1 ), the theoretical calculation formula of the radiation is as follows:

[0040] L p = ∫ 0 Z p E 0 / d 2 T z 1 β sca ( θ p , λ ) T v 1 dr - - - ( 1 )

[0041] Amon...

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Abstract

A dark object method is mainly utilized when path radiance of satellite remote sensing images is computed traditionally. However, the dark object method is an empirical method; by means of the dark object method, the whole scene of images has one path radiance value only, and the error is big. Therefore, the invention provides a physical method for computing the atmospheric path radiance of the satellite remote sensing images through picture elements one by one. The physical method is based on the remote sensing images completely, and no auxiliary data is needed. Accordingly, the physical method is strong in universality, and a new method is provided for computation of a large area of atmospheric path radiance.

Description

technical field [0001] The invention relates to a method for acquiring large-pass radiation of satellite remote sensing images, which can be applied to industries such as agriculture, forestry, meteorology, and ecological environment. Background technique [0002] When solar radiation encounters gas molecules, aerosols, ice crystals and other particles in the atmosphere during the propagation of the atmosphere, part of the light changes direction and spreads out in all directions, which is called scattering. Atmospheric path radiation is the radiation that directly reaches the sensor after the solar radiation is scattered by various components in the atmosphere during the atmospheric transmission process. Atmospheric path radiation in remote sensing images does not contain any spectral and spatial information of ground objects, and the value of atmospheric path radiation reduces the contrast of ground objects in remote sensing images, blurs the details of ground objects, and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89
CPCG01S17/89
Inventor 张兆明何国金王猛猛龙腾飞
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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