Fig. 1. Block diagram of portable infrared target simulation system

Fig. 2. Layout of optical system

Fig. 3. (a) 2D and (b) 3D layout of collimator system

Fig. 4. Wavefront diagram at the exit of the system pupil

Fig. 5. Design of mechanical structure

Fig. 6. Optical machine thermal integrated analysis process

Fig. 7. Model of finite element analysis

Fig. 8. Result of finite element analysis of the primary mirror (a) and the secondary mirror (b)

Fig. 9. Wavefront plot with a temperature difference of 30 ℃

Fig. 10. (a) Structure of target holder; (b) Target patterns

Fig. 11. Fabricating of infrared target simulation system

Fig. 12. System installation and commissioning steps

Fig. 13. Adjustment result of collimator system

Fig. 14. Imaging results at 10 m distance