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 band- width 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 1GHz bandwidth (1500–2500MHz) 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.
A high-speed continuous wave GPR / F. PARRINI; M. PIERACCINI; C. ATZENI. - In: SUBSURFACE SENSING TECHNOLOGIES & APPLICATIONS. - ISSN 1566-0184. - STAMPA. - 6:(2005), pp. 43-57. [10.1007/s11220-005-4225-0]
A high-speed continuous wave GPR
PARRINI, FILIPPO;PIERACCINI, MASSIMILIANO;ATZENI, CARLO
2005
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 band- width 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 1GHz bandwidth (1500–2500MHz) 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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