TY - GEN
T1 - Design of a GPR antenna array for asphalt pavement inspection
AU - Liu, Hai
AU - Sato, Motoyuki
PY - 2013/12/1
Y1 - 2013/12/1
N2 - We designed a common source antenna array for the pavement inspection by ground penetrating radar (GPR). The antenna array consists of six Vivaldi antennas, one for the transmitter and five for the receivers. We calibrated the employed Vivaldi antenna array by considering the antenna phase center position. The time delay of electromagnetic waves from the antenna feeding point to the point of incident on the ground surface is compensated according to the antenna offset and the estimated phase center position. The results of the laboratory measurements demonstrated that the phase center calibration can greatly improve the accuracy of velocity and thickness estimations. A field measurement on a highway pavement indicate that error of the thickness estimation of the asphalt layer is less than 6 mm (10%). We conclude that the developed GPR technique can take an important role in the non-destructive testing of civil engineering structures.
AB - We designed a common source antenna array for the pavement inspection by ground penetrating radar (GPR). The antenna array consists of six Vivaldi antennas, one for the transmitter and five for the receivers. We calibrated the employed Vivaldi antenna array by considering the antenna phase center position. The time delay of electromagnetic waves from the antenna feeding point to the point of incident on the ground surface is compensated according to the antenna offset and the estimated phase center position. The results of the laboratory measurements demonstrated that the phase center calibration can greatly improve the accuracy of velocity and thickness estimations. A field measurement on a highway pavement indicate that error of the thickness estimation of the asphalt layer is less than 6 mm (10%). We conclude that the developed GPR technique can take an important role in the non-destructive testing of civil engineering structures.
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M3 - Conference contribution
AN - SCOPUS:84894150908
SN - 9784885522789
T3 - Conference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
SP - 133
EP - 136
BT - Conference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
T2 - 2013 4th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
Y2 - 23 September 2013 through 27 September 2013
ER -