Magnetic cleanliness of CubeSat 1U satellites for measuring Earth’s magnetic field

The work is devoted to the analysis of the possibility of implementing measurements of the Earth's magnetic field on board small spacecraft of the CubeSat 1U format. In particular, the problem of ensuring magnetic purity for the operation of magnetometers as part of nanosatellites was solved. The required accuracy of the equipment was estimated and the recommended maximum level of the spacecraft's residual magnetic field was determined – 0.1 nT. Ensuring the required value of the background of the magnetic field is possible only if the platform and the magnetometer are spaced apart - due to a special boom. To estimate its minimum length, the simulation of the magnetic field of the nanosatellite was carried out. The resulting value was 1250 cm.