Absolute Radiometric Calibration of ZY3-02 Satellite Multispectral Imager Based on Irradiance-Based Method

In this paper, an irradiance-based absolute radiometric calibration campaign at Baotou site during June and July 2018 was described. This made use of six tarps. The synchronous measurements parameters such as surface reflectance, atmospheric parameters, diffuse-to-global irradiance ratio were collected the satellite overpass. top-of-atmospheric radiance predicted by radiative transfer model with these measurements. linear relationship between DNs sensor band-specific spectral established, a stable reliable coefficient ZY3-02 MUX determined in campaign. We compared results method those reflectance-based method. suggested that is better than