An initial guess method for the reconstruction algorithm with intensity-only data

An initial guess method with intensity-only data is presented to solve the inverse scattering problem in this paper. The purpose of the method is to reduce the computation time by introducing the weak scattering into the multiplicative regularized contrast sources inversion method (MRCSI), which can degenerate the nonlinear inverse problem into a linear one and reduces the computation time drastically. Taking advantage of the properties of fast convergence of the initial guess and stable convergence of other reconstruction method, the combined technique makes image reconstructions more fast and effective.