Improving 2D microwave imaging using known background properties

This paper presented numerical simulation of imaging reconstruction of objects confined within a dielectric wall. The image for the unknown region can be improved if the scattering properties of the wall are known. This improvement is achieved by subtracting the scattered field of the wall. From the total scattered field. The scattered field for wall alone case is obtained by solving a forward scattering problem. Whether this approach can be applied to the partially known background needs to be further investigated.