【摘要】 高精度在轨辐射定标对于卫星遥感定量化产品生产至关重要。本文基于格尔木沙漠场景，通过星地同步实验，获取场地定标所需参数，在考虑地表双向反射特性后，结合6S辐射传输方程，完成对MODIS/Terra和MODIS/Aqua传感器的在轨辐射定标。结果表明，本文获得的蓝、绿、红和近红外波段定标结果与MODIS官方公布的星上定标结果具有较高的一致性，最大相对差异优于6.68%,这将为我国新建辐射定标场地提供重要信息支持。更多还原

【Abstract】 The high accuracy on-orbit radiometric calibration is very important for satellite remote sensing quantitative products. The site calibration parameters in the Golmud desert site are obtained with synchronization experiment. After considering the characteristics of surface bidirectional reflectance, the on-orbit radiometric calibration of MODIS/Terra and MODIS/Aqua sensors is fulfilled with 6S radiative-transfer model. The results show that our calibration results in blue, green, red and near-infrared bands are in good agreement with the official onboard calibration results published by MODIS, and the maximum relative difference is better than 6.68%, which would provide important information to establish a new radiometric calibration site in China.更多还原