TY - GEN
T1 - Feasibility Study of Time Lapse Ground Penetrating Radar as Monitoring Measures for Deep Excavation Works
AU - Kenneth Pak, C. W.
AU - Ren, G.
AU - Li, J.
AU - Lai, Wallace Wai Lok
PY - 2018/8/20
Y1 - 2018/8/20
N2 - This paper studies the feasibility of the Time Lapse GRP (TLGPR) to be a monitoring measures for deep excavation works. The TLGPR aims to quantify the difference between two radargram collected along boundary of construction site at different time. It provides an information on the degree of change, or even formation of void, in the soil mass being retained by lateral support. Non-signal processed data (256 samples per trace) were input to an in-house LabView programme for Wavelet Transform (WT) to determine the peak frequency of A-scan at particular time-depth. By comparing the differences in peak frequency at different time, changes in soil mass identified. Result shows that the TLGPR able to quantify the degree of change between two radargram. Moreover, due to the TLGPR is comparing the difference in frequency domain, it is capable to identify differences which are not visually notable from signal processed image.
AB - This paper studies the feasibility of the Time Lapse GRP (TLGPR) to be a monitoring measures for deep excavation works. The TLGPR aims to quantify the difference between two radargram collected along boundary of construction site at different time. It provides an information on the degree of change, or even formation of void, in the soil mass being retained by lateral support. Non-signal processed data (256 samples per trace) were input to an in-house LabView programme for Wavelet Transform (WT) to determine the peak frequency of A-scan at particular time-depth. By comparing the differences in peak frequency at different time, changes in soil mass identified. Result shows that the TLGPR able to quantify the degree of change between two radargram. Moreover, due to the TLGPR is comparing the difference in frequency domain, it is capable to identify differences which are not visually notable from signal processed image.
KW - GPR
KW - Ground Penetrating Radar
KW - Temporal
KW - Time lapse
UR - http://www.scopus.com/inward/record.url?scp=85053375725&partnerID=8YFLogxK
U2 - 10.1109/ICGPR.2018.8441656
DO - 10.1109/ICGPR.2018.8441656
M3 - Conference article published in proceeding or book
AN - SCOPUS:85053375725
SN - 9781538657775
T3 - 2018 17th International Conference on Ground Penetrating Radar, GPR 2018
BT - 2018 17th International Conference on Ground Penetrating Radar, GPR 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th International Conference on Ground Penetrating Radar, GPR 2018
Y2 - 18 June 2018 through 21 June 2018
ER -