Efficient and Accurate Scattering Inversion Methods Based on High-order Born Approximation

Based on High-order Born approximation, two kinds of iterative scattering inversion methods are introduced in this paper for microwave imaging. The difference between two kinds of methods is whether integral equation or difference equation is used to establish scattering relationship. For the method based on integral equation, a fast forward-solver is introduced to accelerate forward procedure. And for the methods based on difference equation, an iterative frame is presented to enhance accuracy. Numerical simulation results show that the proposed methods have good performance in terms of imaging efficiency and quality.