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A novel, compact, low-cost, impulse ground-penetrating radar for nondestructive evaluation of pavements

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3 Author(s)
Jeong Soo Lee ; Filtronic Compound Semicond. Inc., Santa Clara, CA, USA ; Cam Nguyen ; T. Scullion

This paper reports on the development of a novel, compact, low-cost, impulse ground-penetrating radar (GPR) and demonstrate its use for nondestructive evaluation of pavement structures. This GPR consists of an ultrashort-monocycle-pulse transmitter (330 ps), an ultrawide-band (UWB) sampling receiver (0-6 GHz), and two UWB antennas (0.2-20 GHz)-completely designed using microwave-integrated circuits with seamless electrical connections between them. An approximate analysis is used to determine the signal loss and power budget. Performance of this GPR has been verified through the measurements of relative permittivity and thicknesses of various samples, and a good agreement between the experimental and theoretical results has been achieved.

Published in:

IEEE Transactions on Instrumentation and Measurement  (Volume:53 ,  Issue: 6 )