Calibration scheme for space-borne full-disk vector magnetograph under the influence of orbiter velocity

Context. The Full-disk Vector MagnetoGraph (FMG) is one of the three payloads on Advanced Space-based Solar Observatory (ASO-S). FMG set to observe full disk vector magnetic field at a single wavelength point. magnetograph in orbit will encounter shift problem caused by Doppler effect field, which mainly comes from Sun’s rotation velocity and satellite–sun relative velocity. Aims. We look use neural networks for single-wavelength calibration solve problem. Methods. used existing data Helioseismic Magnetic Imager (HMI) Dynamics (SDO). To simulate plausible observations, we Stokes polarization image HMI also input satellite orbital given file solar network. developed preprocessing methods before entering network trained get model. Results. By analyzing comparing prediction with target magnetogram, believe that our model has learned full-disk mean absolute error (MAE) longitudinal transverse are 3.68 G 28.08 G, respectively. MAE azimuth angle pixels above 300 12.29°.