Imaging of a penetrable object buried in a lossy half-space for a multipoint bistatic measurement configuration above the interface

Underground object of one wavelength by one wavelength is reconstructed from the simulated measured fields in the air above the ground interface. By using the transmitting and receiving antenna separated about half a wavelength, one eliminates the direct coupling including the reflections from the interface and reconstructs the object from the fields scattered by the object. An iterative inversion method with the Levenberg-Marquardt optimization algorithm and simulated annealing are used for the reconstruction of high-contrast, large, and slightly lossy object in the presence of Gaussian noise in the measured field