TY - GEN
T1 - Time-frequency spectral analysis of step frequency continuous wave and impulse ground penetrating radar
AU - Wong, P. T.W.
AU - Lai, W. W.L.
AU - Sato, M.
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/9/20
Y1 - 2016/9/20
N2 - Time-frequency spectral responses of an in-house built step-frequency continuous wave (SFCW) GPR (Y akumo) developed by Tohoku University and a commercial impulse GPR were studied and compared. The Yakumo SFCW GPR operates from 50 MHz to 1.5 GHz, and the center frequency of the commercial impulse GPR is 500 MHz. Both GPRs were probed on top of an embedded steel pipe overlaid by a concrete pavement. The time domain radargram signals were transformed to the time-frequency domain through a continuous wavelet transform with Morlet wavelet as the mother wavelet. The study reveals, with a definite buried pipe as a reflector, how the spectral responses in both the frequency domain and time-frequency domain are changed by two different bandwidths and two different ray paths of the GPR wave propagation into materials.
AB - Time-frequency spectral responses of an in-house built step-frequency continuous wave (SFCW) GPR (Y akumo) developed by Tohoku University and a commercial impulse GPR were studied and compared. The Yakumo SFCW GPR operates from 50 MHz to 1.5 GHz, and the center frequency of the commercial impulse GPR is 500 MHz. Both GPRs were probed on top of an embedded steel pipe overlaid by a concrete pavement. The time domain radargram signals were transformed to the time-frequency domain through a continuous wavelet transform with Morlet wavelet as the mother wavelet. The study reveals, with a definite buried pipe as a reflector, how the spectral responses in both the frequency domain and time-frequency domain are changed by two different bandwidths and two different ray paths of the GPR wave propagation into materials.
KW - Ground penetrating radar
KW - Impulse radar
KW - Step frequency continuous wave (SFCW)
KW - Wavelet transform
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U2 - 10.1109/ICGPR.2016.7572694
DO - 10.1109/ICGPR.2016.7572694
M3 - Conference contribution
AN - SCOPUS:84992146554
T3 - Proceedings of 2016 16th International Conference of Ground Penetrating Radar, GPR 2016
BT - Proceedings of 2016 16th International Conference of Ground Penetrating Radar, GPR 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th International Conference of Ground Penetrating Radar, GPR 2016
Y2 - 13 June 2016 through 16 June 2016
ER -