TY - GEN
T1 - Tunnel detection using cross-well radar
AU - Farid, Arvin M.
AU - Martinez-Lorenzo, Jose A.
AU - Alshawabkeh, Akram N.
AU - Rappaport, Carey M.
PY - 2008
Y1 - 2008
N2 - Illegal immigrants and smugglers have frequently used underground tunnels to avoid border security and checkpoints. The threat of international terrorism also warrants the effort to detect tunnels a national security priority. The goal of this research is to study and evaluate the feasibility of using Cross-Well Radar to detect tunnels and develop a real-time monitoring technique for borders (narrowed down to by surface investigation, such as GPR, etc.) or surrounding prisons or highly secured area. In this paper, an approach for tunnel detection is experimentally validated at a pilot scale facility (referred to as SoilBED). Multiple-depth wideband frequencyresponse measurements were collected in the fully saturated sandy soil, and across PVC-cased ferrite-bead jacketed borehole monopole antennas. The measurements were used to assess the impact of the experimentally simulated tunnels on the electromagnetic wave propagation. The setup was then theoretically modeled using a two dimensional finite difference frequency domain (2D-FDFD) technique to seek the level of agreement between the theoretical and experimental data. The results will be eventually used to reconstruct images of the tunnel via inversion techniques. Copyright ASCE 2008.
AB - Illegal immigrants and smugglers have frequently used underground tunnels to avoid border security and checkpoints. The threat of international terrorism also warrants the effort to detect tunnels a national security priority. The goal of this research is to study and evaluate the feasibility of using Cross-Well Radar to detect tunnels and develop a real-time monitoring technique for borders (narrowed down to by surface investigation, such as GPR, etc.) or surrounding prisons or highly secured area. In this paper, an approach for tunnel detection is experimentally validated at a pilot scale facility (referred to as SoilBED). Multiple-depth wideband frequencyresponse measurements were collected in the fully saturated sandy soil, and across PVC-cased ferrite-bead jacketed borehole monopole antennas. The measurements were used to assess the impact of the experimentally simulated tunnels on the electromagnetic wave propagation. The setup was then theoretically modeled using a two dimensional finite difference frequency domain (2D-FDFD) technique to seek the level of agreement between the theoretical and experimental data. The results will be eventually used to reconstruct images of the tunnel via inversion techniques. Copyright ASCE 2008.
UR - http://www.scopus.com/inward/record.url?scp=66449103902&partnerID=8YFLogxK
U2 - 10.1061/40972(311)36
DO - 10.1061/40972(311)36
M3 - Conference contribution
AN - SCOPUS:66449103902
SN - 9780784409725
T3 - Geotechnical Special Publication
SP - 284
EP - 291
BT - Proceedings of Sessions of GeoCongress 2008 - GeoCongress 2008
T2 - GeoCongress 2008: Characterization, Monitoring, and Modeling of GeoSystems
Y2 - 9 March 2008 through 12 March 2008
ER -