Atmospheric correction and residual errors in vicarious cross-calibration of AVNIR and OCTS both onboard ADEOS Original Research Article

A method for vicarious calibration of a solar reflectance radiometer through an estimation of reflectance of the test site with a high spatial-resolution radiometer onboard the same platform is proposed. Here we treat the case of the vicarious cross-calibration of ADEOS/OCTS (Advanced Earth Observing Satellite/Ocean Color and Temperature Scanner) with ADEOS/AVNIR (Advanced Visible and Near Infrared Radiometer). Error budget analysis for the proposed method shows that the vicarious calibration error with approximately 4.4% error can be achieved. There the contribution of the high spatial-resolution radiometer error is around 3.3%, while the cross calibration error between the solar reflectance (low resolution) radiometer and the high spatial resolution one is about 2.8%.