Fig. 1. Detection principle of airborne optoelectronic imaging system

Fig. 2. Distribution of reflected background radiation of the target

Fig. 3. Target and detecting camera located at the same plane

Fig. 4. Target located below the detecting camera

Fig. 5. Target located above the detecting camera

Fig. 6. Schematic of target radiation transmission to the optical system

Fig. 7. (a) Outline structure and (b) optical layout of AWARE-2 camera

Fig. 8. Schematic of single channel imaging of the monocentric multiscale system

Fig. 9. Relationship between the system aperture and the focal length of the lens

Fig. 10. Relationship between the system aperture and the focus length f0, f1

Fig. 11. Two-layer monocentric lens

Fig. 12. Relationship between detection distance R and focus length f0, f1, f2

Fig. 13. Optical layout of the system after optimization design

Fig. 14. Spot diagram of the optical system imaging

Fig. 15. MTF curves of the optical system

Fig. 16. Response characteristic of the SNR of the spectral signal of the moving target with different velocities

Fig. 17. Variation relationship between the SNR of detection target and detection distance