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Currently, Ground Penetrating Radar (GPR) used in archaeological prospection is based on 2-D parallel line methodologies characterized by line spacing from 0.25 to 1 m (common line separation is 0.5 m) with different GPR antennas and extensive interpolation used to fill data gaps. High resolution 3-D GPR images of the subsurface can be obtained by recording data with a quarter wavelength grid spacing...
We introduce a case study of GPR archaeological survey carried out in Japan. Most of the archaeological sites in Japan are small, and have uneven ground surface topography. We demonstrate that GPR surveys with advanced systems and software can provide us very clear 3D GPR profiles. We surveyed Inariyama-Kofun tumulus, Japan and found an anomaly at 3m depth. This can be unknown archaeological structure...
A circular survey for 3D GPR using the linearly polarized antenna is proposed to detect and map the hidden cylinders. The backscattering signal from cylinders may strongly depend on the orientation of the cylinder relative to the antenna. The circular survey can conform to the optimal measuring condition that the long axis of the bow-tie antenna oriented is parallel to the long axis of the cylinders,...
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