Design of a GPR antenna array for asphalt pavement inspection

Hai Liu, Motoyuki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationConference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
Pages133-136
Number of pages4
Publication statusPublished - 2013 Dec 1
Event2013 4th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013 - Tsukuba, Japan
Duration: 2013 Sep 232013 Sep 27

Publication series

NameConference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013

Other

Other2013 4th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
Country/TerritoryJapan
CityTsukuba
Period13/9/2313/9/27

ASJC Scopus subject areas

  • Computer Networks and Communications

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