TY - GEN
T1 - Suppression of multi-path coupling in scaled-down experiment using cross-borehole pulse radar
AU - Cho, Jae Hyoung
AU - Yook, Jong Gwan
AU - Jung, Ji Hyun
AU - Kim, Se Yun
N1 - Publisher Copyright:
© 2016 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/10/19
Y1 - 2016/10/19
N2 - A scaled-down experiment using cross-borehole pulse radar is performed in laboratory to extract a more precise decision rule on detecting an intrusive man-made tunnel in Korea. To minimize the total size, a scaled-down model of an air-filled tunnel in underground rock is replaced by a cylindrical ceramic rod in pure water. When the upper arm of sleeve dipole antenna of the scaled-down cross-borehole pulse radar is directly connected to coaxial cable, the measured B-scan data are contaminated by unwanted striped pattern. Such multi-path coupling between the sleeve antenna pair is generated by the glass tube-guided waves. To suppress the glass tube-guided waves, the coaxial cable is clad in ferrite cores. As the total length of the ferrite core loading is increased up to 150 mm, the unwanted coupling is suppressed gradually and the target signature can be recognized more clearly.
AB - A scaled-down experiment using cross-borehole pulse radar is performed in laboratory to extract a more precise decision rule on detecting an intrusive man-made tunnel in Korea. To minimize the total size, a scaled-down model of an air-filled tunnel in underground rock is replaced by a cylindrical ceramic rod in pure water. When the upper arm of sleeve dipole antenna of the scaled-down cross-borehole pulse radar is directly connected to coaxial cable, the measured B-scan data are contaminated by unwanted striped pattern. Such multi-path coupling between the sleeve antenna pair is generated by the glass tube-guided waves. To suppress the glass tube-guided waves, the coaxial cable is clad in ferrite cores. As the total length of the ferrite core loading is increased up to 150 mm, the unwanted coupling is suppressed gradually and the target signature can be recognized more clearly.
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U2 - 10.1109/URSIAP-RASC.2016.7601346
DO - 10.1109/URSIAP-RASC.2016.7601346
M3 - Conference contribution
AN - SCOPUS:84995468080
T3 - 2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016
SP - 1024
EP - 1027
BT - 2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016
Y2 - 21 August 2016 through 25 August 2016
ER -