In-flight calibration of the magnetometer on the Mars orbiter of Tianwen-1

Mars orbiter magnetometer (MOMAG) is one of seven science payloads onboard Tianwen-1’s orbiter. Unlike most the satellites, not magnetically cleaned, and boom where placed magnetometer’s sensors long enough. These pose many challenges to magnetic field data processing. In this study, we introduce in-flight calibration process Tianwen-1/MOMAG. The interference including spacecraft generated dynamic slowly-changing zero offsets are cleaned in sequence. Then calibrated compared with from atmosphere volatile EvolutioN (MAVEN). We find that some physical structures solar wind consistent between two sets, distributions strength very similar. results suggest MOMAG successful provides reliable for scientific research.