In-flight vector magnetometer calibration for FY-3E satellite

The FY-3E meteorological satellite was launched by China on July 5, 2021. The orbit of the satellite is sun-synchronous with an orbit altitude 836 km and orbit period 102 min. The satellite is equipped with a triaxial anisotropic magnetore-sistance magnetometer to detect ultra-low frequency waves in the magnetosphere. The magnetometer sensor is situated on the satellite truss. It is approximately 1 m away from the satellite body to reduce the effect of spacecraft fields.