Satellite atmospheric correction method for multi-angle polarization water color remote sensor

Abstract

The invention provides a satellite atmospheric correction method for a multi-angle polarization water color remote sensor. According to the atmospheric correction method provided by the invention, the atmospheric diffusion transmittance index lookup table for the off-water radiation linear polarization component under the medium-low turbidity water body is constructed by utilizing the vector radiation transmission model, and the off-water radiation polarization component is accurately corrected in the correction process; and finally, accurately obtaining the concentration of suspended particulate matters in the water body and the optical thickness, concentration and particle size spectrum distribution of aerosol according to the water-leaving radiation linear polarization component. Through the atmospheric correction method provided by the invention, the image quality of satellite remote sensing detection can be higher, and the detection result is more accurate.

Description

technical field [0001] The invention belongs to the field of remote sensing image processing, and in particular relates to a satellite atmospheric correction method for a multi-angle polarized water color remote sensor. Background technique [0002] The atmosphere is an important factor affecting the quantitative analysis and application of water color remote sensing. In the radiation intensity information received by the top of the atmosphere, atmospheric signals account for about 90%. Therefore, eliminating atmospheric effects is an important prerequisite for determining the accuracy of water color remote sensing analysis. Atmospheric correction of polarization images is of great significance for obtaining real polarization information of water bodies. [0003] In The atmospheric correction algorithm for HY-1A / COCTS, SPIE Remote Sensing (SPIE, 2005), Vol. 5977, H.Xianqiang et al described the atmospheric correction method adopted by my country's HY-1A / COCTS ocean remote se...

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Problems solved by technology

[0003] H.Xianqiang et al. described the atmospheric correction method adopted by my country's HY-1A / COCTS ocean remote sensing satellite in The atmospheric correction algorithm for HY-1A / COCTS, SPIE Remote Sensing (SPIE, 2005), Vol. 5977. The main defect is that the atmospheric correction process only considers the water-leaving radiation intensity component, and does not consider the atmospheric diffuse transmittance corresponding to the water-leaving radiation polarization component when it is transmitted in the atmosphere. Water radiation information is very important to explore water body components and sea conditions. If the atmospheric correction process is not accurate enough, it will greatly affect the subsequent exploration of related water color components.

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