Fig. 1. Exponential decay point spread function varies with pixel distance when spatial resolution is 0.8 m. (a) Three-dimensional surface diagram; (b) contour image

Fig. 2. GF-2 panchromatic band satellite images before and after atmospheric correction. Apparent reflectance images of (a) polluted atmosphere and (d) clean atmosphere before atmospheric correction; initial surface reflectance images of (b) polluted atmosphere and (e) clean atmosphere after atmospheric radiation correction; true surface reflectance images of (c) polluted atmosphere and (f) clean atmosphere after adjacency effect correction

Fig. 3. Comparison of clarity, contrast, edge energy, and detail energy of panchromatic band satellite images before and after atmospheric correction. (a) Clarity; (b) contrast; (c) edge energy; (d) detail energy

Fig. 4. MTF of panchromatic band satellite images before and after atmospheric correction. (a) Polluted atmosphere; (b) clean atmosphere

Table 1. Atmospheric parameters and observed geometric parameters of GF-2 panchromatic band image (450-900 nm)

Table 2. AOD of Terra MODIS product and AOD measured at AERONET Baotou site

Table 3. Comparison of quantitative improvement of panchromatic band satellite images by atmospheric correction