Fig. 1. ROI extraction process of sub-pixel aircraft

Fig. 2. Spectral comparison of multiple seawater pixels：（a）spectral of VNIR bands；（b）spectral of SWIR bands

Fig. 3. Example of aircraft and contrails cloud samples with land background

Fig. 4. Example of aircraft and contrails cloud samples with sea background

Fig. 5. Example of aircraft and contrails cloud samples with cloud background

Fig. 6. Example of aircraft endmember and sea background endmember extraction results

Fig. 7. Examples of contrails cloud and aerial aircraft in HIS：（a）RGB image；（b）image of 1 359 nm band

Fig. 8. Examples of contrails cloud and aerial aircraft detection results