AIOFM Develops AKAN Aerosol Optical Depth Retrieval Algorithm for POSP Polarization Scanner on Gaofen-5B

The Optical Remote Sensing Center of the Anhui Institute of Optics and Mechanics published a paper in IEEE TGRS proposing an attention-enhanced Kolmogorov-Arnold network (AKAN) method to retrieve aerosol optical depth from POSP polarization observations by the Gaofen-5B satellite. The team built more than 240,000 matched samples using AERONET ground-based data. The model achieved a coefficient of determination R² of 0.9336 and a root mean square error of 0.0492, with 94.25% of results falling within the expected error range. SHAP analysis showed that the sensitive bands and scattering angle features identified by the model are broadly consistent with radiative transfer principles.