Ocean optical satellite radiometric calibration method based on air-sea collaborative observation

The invention relates to a marine optical satellite radiation calibration method based on air-sea collaborative observation, and the method comprises the following steps: (1), designing a marine in-situ-unmanned plane collaborative observation mode and navigation station layout according to the orbit and load characteristics of a marine optical remote sensing satellite, obtaining sea surface water-leaving radiance at different stations and remote sensing reflectivity image products for observing seawater in a certain range of a sea area; (2) inverting an absolute off-water radiation brightness product of the unmanned aerial vehicle image according to the in-situ observation data; (3) calculating a relative radiation correction product of the marine optical satellite; and (4) calculating the absolute radiation correction coefficient of the ocean optical satellite according to the absolute off-water radiation brightness product of the unmanned aerial vehicle image. According to the ocean optical satellite radia