Extended Born approximation technique applied to linear inversion method

Integral equation method is one of effective methods of numerical simulation and inversion calculation for multi-dimensional electromagnetic response. According to the linearization of the scattering electromagnetic integral equation based on extended Born approximation, a new inverse scattering method using phaseless data is presented. Aiming at the characteristics that iterative Born approximation inversion depends on the initial model, the method can solve the nonlinear inverse scattering problem without phase information, because extended Born approximation is a nonlinear method beyond Born approximation. Finally, the effectiveness of the method has been testified by numerical experiments.