Scattering Equation Approach to Multi-Frequency Microwave Imaging

The paper presents an approach to microwave image reconstruction. The approach is based on scalar integral scattering equation under Born approximation. Scattering equation in discrete form is reduced to the system of linear equations, which is solved to obtain object image. Scattered field data gathered using multiple incident frequencies were used. Tikhonov regularization is used to overcome problem ill-posedness. It's shown that using approach proposed allows achieving better radial resolution compared to frequency domain approach.