Abstract.
In this work an innovative high speed continuous wave stepped frequency GPR has been designed and implemented with the aim of overcoming the low speed issue of wide bandwidth CW-SF GPRs. It is based on a structure combining a Digital Direct Synthesizer (DDS), a Phase Lock Loop (PLL) and a quadrature modulator (I/Q Modulator). The radar is an L-S band GPR able to scan a 1 GHz bandwidth (1500–2500 MHz) with 200 steps in 10 ms. The system has been developed for automatic synthetic aperture radar (SAR) imaging of historical-artistic interest structures. Some system tests and laboratory tests on a realistic masonry setup were carried out in order to asses the performances of this system.
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Parrini, F., Pieraccini, M. & Atzeni, C. A High-Speed Continuous Wave GPR. Subsurf Sens Technol Appl 6, 43–57 (2005). https://doi.org/10.1007/s11220-005-4225-0
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DOI: https://doi.org/10.1007/s11220-005-4225-0