Near-Field Tomography and Holography of Low-Contrast Subsurface Objects

We develop a new method for electromagnetic computer tomography of distributed subsurface inhomogeneities and holography (i.e., retrieval of the form) of internally homogeneous subsurface objects. The method is based on solving the inverse problem of near-field scattering with allowance for the data of multifrequency measurements of the two-dimensional distribution of the scattered-field complex amplitudes along the medium surface over the region of inhomogeneities.