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Airborne ground penetrating radar (GPR) is a suitable tool to perform cost-effective surveys of the underground of a large possibly non-accessible areas. And It is concluded that airborne GPR will receive more attention in the future. So we have developed a L-band Full-polarimetric Step-Frequency GPR acquisition system, which consists of a GPS receiver, the Vivaldi antenna, a signal amplifier and...
Polarimetric GPR requires accurate calibration of channel imbalance and crosstalk not only in the amplitude term but also in the phase term. Currently, there have some calibration techniques. Though these techniques are very easy to perform, they provide less accurate calibration results for the crosstalk. To improve on the accuracy of calibration, we have developed a mathematical formulation to calibrate...
Handheld ground-penetrating radar (GPR) system is one of a number of technologies that has been researched as a means of improving landmine detection efficiency. However, as the measurement points are random and data are irregular for the human operator, it is difficult to display subsurface visualization imaging. Also detection of buried landmines by GPR normally suffers from very strong clutter...
Generally GPR transmits and receives radio waves with a single polarization using two parallel antennas, which can't use the polarimetrie information. But it is possible to improve the subsurface imaging and discriminate targets by analyzing the backscattered wave with a variety of polarizations. Some successful cases were showed in unexploded ordnance and landmine detection. We are developing a full-polarimetric...
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