Atmospheric Correction of GF-6/WFV Sensor Supported by Modis.

GF-6 is a low-orbit optical remote sensing satellite and it's the first high-resolution satellite for precision agricultural observations in China. The quantitative application and analysis of remote sensing images rely on the support of accurate surface reflectance data. Therefore, a fast and accurate atmospheric correction process is of great significance for the high-precision inversion of remote sensing parameters. In this paper, MOD09A1 is used to provide support for surface reflectance data to obtain aerosol parameters, and then achieve atmospheric correction of GF-6/WFV based on the 6S model. We selected China Beijing as the research area and obtained remote sensing data and AERONET ground measurement data, then carried out atmospheric correction experiments and accuracy verification. The verification results show that the aerosol inversion results and the measured data have small errors (MAE=0.029, RMSE=0.047) and high correlation (R=0.875); the image contrast is improved after atmospheric correction, and the surface reflection spectrum information is better restored.