Research of radiometric cross-calibration about GF-1 satellite sensors

This paper is about the radiometric cross-calibration method of GF-1 image with landsat8-OLI data. First the cross-calibration was implemented using the night deep sea imaging to obtain the bias of GF-1 cross-calibration coefficient. Then eight times images of two sensors passing through the target place were selected to obtain the gains of the GF-1 cross-calibration coefficient. The correlation between the radiance value calculated by the cross-calibration coefficient and the synchronous observations of the Landsat8 radiance value is above 95%. The accuracy relative errors of the 4 bands are 4.25%, 6.21%, 5.83% and 5.66% respectively. The results show that the calibration coefficients obtained from the method have a similar precision as Landsat8-OLI. The calibration coefficients can satisfy the quantitative applications of GF-1 data.