Fig. 1. Schematic of magneto-optical trap with optical configuration and model of physics package of strontium optical lattice clock in space

Fig. 2. Schematic diagram of magnetic field test under different rotation directions of permanent magnet

Fig. 3. Change of lattice images during magnet rotation

Fig. 4. Spectroscopy of clock transition

Fig. 5. Relationship between frequency stability and the magnetic field fluctuations during week of clock inquiry

Fig. 6. Schematic diagram of residual magnetic field compensation system

Fig. 7. Measurement results of magnetic field fluctuation