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A novel approach to full-polarimetric short-range imaging with rotating arrays is proposed. Instead of taking advantage of all four possible combinations of the polarizations of transmit and receive antennas as in the typical full-polarimetric imaging systems, the suggested antenna array acquires three different copolarized measurements at each spatial sampling point with its rotation. A simple algebraic...
In this paper, 3D imaging of forward-looking Ground Penetrating Radar (GPR) data acquired by rotating antennas have been done. The data acquisition procedure mimics data collection of the Tunnel Boring Machine (TBM). Real GPR data for a Karst scenario were analyzed, preprocessed and finally imaged with back-projection method. Results show that objects buried in the subsurface of the ground can be...
In this paper, a novel rotating array topology is proposed for full polarimetric imaging. The rotating array acquires three co-polarized signals at each spatial sampling point. After a simple algebraic manipulation, the full polarimetric signals in the HV polarization basis can be retrieved. Then the traditional polarimetric imaging algorithms can be applied to reconstruct the full polarimetric images...
3-D subsurface imaging in front of tunnel boring machine (TBM) is considered by means of Ground Penetrating Radar (GPR). The performances of two different GPR antenna topologies, i.e., planar array and circular synthetic aperture radar (CSAR) are compared for some typical operation scenarios of TBM, e.g., brutal change of geology, fault and so on. Numerical simulations show that in the presence of...
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