Abstract
The main purpose of this paper is to solve the electromagnetic inverse scattering problem (ISP). Compared with conventional tomography technology, it considers the interaction between the internal structure of the scene and the electromagnetic wave in a more realistic manner. However, due to the nonlinearity of ISP, the conventional calculation scheme usually has some problems, such as the unsatisfactory imaging effect and high computational cost. To solve these problems and improve the imaging quality, this paper presents a simple method named the diagonal matrix inversion method (DMI) to estimate the distribution of scatterer contrast (DSC) and a Generative Adversarial Network (GAN) which could optimize the DSC obtained by DMI and make it closer to the real distribution of scatterer contrast. In order to make the distribution of scatterer contrast generated by GAN more accurate, the forward model is embedded in the GAN. Moreover, because of the existence of the forward model, not only is the DSC generated by the generator similar to the original distribution of the scatterer contrast in the numerical distribution, but the numerical of each point is also approximate to the original.
Highlights
Electromagnetic inverse scattering is an accurate imaging method in the field of nondestructive testing
It has been proven that these methods can provide satisfactory results for objects of medium size and contrast, their computational cost is too high and not suitable for real-time imaging
Due to the influence of multiple scattering effects, the nonlinear electromagnetic inverse scattering technology has mainly been used for low-contrast objects
Summary
Electromagnetic inverse scattering is an accurate imaging method in the field of nondestructive testing. It determines the distribution characteristics of the physical parameters of scatterers by measuring the distribution of scattering fields. It is widely used in science, engineering, and the military and medical fields [1,2,3,4,5,6,7]. Due to the influence of multiple scattering effects, the nonlinear electromagnetic inverse scattering technology has mainly been used for low-contrast objects
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