An Effective Method for Borehole Imaging of Buried Tunnels

Detection and imaging of buried tunnels is a challenging problem which is relevant to both geophysical surveys and security monitoring. To comply with the need of exploring large portions of the underground, electromagnetic measurements carried out under a borehole configuration are usually exploite...

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Bibliographic Details
Published in:International journal of antennas and propagation 2012-01, Vol.2012 (2012), p.1-9
Main Authors: Catapano, Ilaria, Scapaticci, Rosa, Isernia, Tommaso, Crocco, Lorenzo, Di Donato, Loreto
Format: Article
Language:English
Subjects:
Antennas
Boreholes
Data processing
Electric properties
Geometry
Geophysics
Imaging
Medical imaging
Receiving
Studies
Three dimensional
Tunnels (transportation)
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Summary:Detection and imaging of buried tunnels is a challenging problem which is relevant to both geophysical surveys and security monitoring. To comply with the need of exploring large portions of the underground, electromagnetic measurements carried out under a borehole configuration are usually exploited. Since this requires to drill holes in the soil wherein the transmitting and receiving antennas have to be positioned, low complexity of the involved apparatus is important. On the other hand, to effectively image the surveyed area, there is the need for adopting efficient and reliable imaging methods. To address these issues, in this paper we investigate the feasibility of the linear sampling method (LSM), as this inverse scattering method is capable to provide almost real-time results even when 3D images of very large domains are built, while not requiring approximations of the underlying physics. In particular, the results of the reported numerical analysis show that the LSM is capable of performing the required imaging task while using a quite simple measurement configuration consisting of two boreholes and a few number of multiview-multistatic acquisitions.
ISSN:1687-5869
1687-5877
DOI:10.1155/2012/246472