Subsurface Microwave Imaging By Using Angular Spectrum of Electromagnetic Field

Abstract

The new approach to the solution of a problem of the microwave image reconstruction of the subsurface objects is offered in the present work. Necessity of the complex amplitude measurement of electromagnetic field is excluded in a point on a direct line above surface in the considered further method. Calculation of the direct Fourier transformation of the measured field is also excluded. In the experiment, data on complex electromagnetic field (data of the transmission coefficients) at 32 frequencies in the operating band with a constant frequency step was used. Experiments were carried out at frequencies from 3 to 4 GHz. The images of the irradiating dipoles, considered as models of the scattering centers of an object, were reconstructed from the measured data.