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Experimental evaluation of a Ground Penetrating Radar (GPR) system is presented. The method is based on an Underground-SAR imaging algorithm that takes into account the complex permittivity of the soil to compensate for the slower wave propagation so that buried objects are imaged at the correct depth. The proposed GPR imaging system is devoted to operate in C band, from 3.5 to 5.5 GHz, in order to...
This paper describes a novel fast, two-dimensional method to find the shape of a body from its scattered electric field. The method combines the information extracted from the target using the SAR formulation with a fast model-based inversion in three steps: (1) The SAR image is formed, recovering an initial estimate of the body shape; (2) The phase and amplitude of the SAR image are used to extract...
This work develops compressed sensing techniques to improve the performance of an active three dimensional (3D) millimeter wave imaging system for personnel security screening. The system is able to produce a high-resolution 3D reconstruction of the whole human body surface and reveal concealed objects under clothing. Innovative multistatic millimeter wave radar designs and algorithms, which have...
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