Fig. 1. Schematic diagram of the structure of the super large-scale area array focal plane cold stage assembly

Fig. 2. Design drawing of support structure of cold platform components

Fig. 3. Influence of support structure aspect ratio (a), height (b), installation inclination (c), material (d) on components

Fig. 4. Comprehensive analysis diagram of component fundamental frequency, stress and structural thermal resistance for different parameter groups

Fig. 5. The first six-order mode shape diagram of the ultra-large cold platform components

Fig. 6. Photo of vibration testing process of ultra-large cold platform components

Fig. 7. Simulation analysis and vibration test results comparison of ultra-large cold platform components