Abstract
In this letter, an efficient method is presented to solve two-dimensional microwave inverse scattering problem associated with the microwave imaging. In this method, the unknown contrast function of the investigation domain is represented by Fourier–Jacobi (FJ) expansion, which is a well-known expansion in optics. Using FJ expansion allows us to represent the contrast function of the investigation domain with only a small number of unknown coefficients. Applications of FJ expansion to microwave imaging problems are presented, and a global optimization algorithm and a direct electromagnetic solver based on the method of moments are utilized to determine the coefficients of the expansion.
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