Research of Microwave Scattering of Burned Ground Surface Based on the Decomposition and Reconstruction Principle - Two Scale Model

In this paper, the decomposition and reconstruction principle - two scale model (DRP-TSM) is firstly proposed to analyze microwave scattering of burned ground surface. According to the different states of ground surface before and after forest fires, we use the microwave scattering model to study the calculation of electromagnetic process of burned ground surface. Meanwhile, multi-band scattering coefficients of different polarization are measured to exploiting the temporal and spatial responses of forest fires effect on ground surface. Simultaneously, the small perturbation model is constructed in the DRP-TSM, which described as the combination of large-scale roughness and small-scale roughness for the accurate simulation of burned ground surface characteristics. Finally, the field experiments based on ground-based radar scatterometer (GBRS) are carried out and the observation is used for validation.