Fig. 1. Diagram of 3 m×3 m surface blackbody thermal control system process

Fig. 2. Schematic diagram (a) and physical photo (b) of 3 m×3 m blackbody & cold plate assembly integration

Fig. 3. Installation diagram of platinum resistance for blackbody

Fig. 4. Distribution of platinum resistances and blackbody & cold plates

Fig. 5. Functional principle of controller system

Fig. 6. Surface blackbody temperature experiment curves in case 1

Fig. 7. Surface blackbody temperature experiment curves in case 2 and 3

Fig. 8. 3 m×3 m surface blackbody temperature experiment data in case 1-3

Fig. 9. 3 m×3 m surface blackbody temperature cloudy map in case 1-3