Fig. 1. Research ideas for hyperspectral image simulation

Fig. 2. Technical process of scene spectrum library construction

Fig. 3. Hyperspectral image flow based on scene spectral library

Fig. 4. Retrieval algorithm based on NDVI

Fig. 5. The sketch map of space vector

Fig. 6. Multi spectral image of the research area on March 31, 2019

Fig. 7. 10 m level land cover classification map of the research area^[16]

Fig. 8. Real hyperspectral images (a) and simulated images (b) of the research area (red-59, green-38, blue-20)

Fig. 9. R² curve comparison of simulation results in each band

Fig. 10. Comparison of simulation results between two methods. (a) Real hyperspectral images; (b) simulation result based on standard spectral library; (c) simulation result based on scene spectral library