Locating soil anomalies using the impedance variation of a horizontal dipole over ground

A simple horizontal dipole over ground can be used as a near-field probe for buried object detection if changes in the dipole impedance produced by the presence of the buried object can be correlated to the characteristics of the object. In this paper, the wideband variation in the input impedance o...

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Bibliographic Details
Main Authors: Donohoe, J.P., Fairley, J.R., Lynch, L.N.
Format: Conference Proceeding
Language:English
Subjects:
Buried object detection
Dipole antennas
Finite difference methods
Frequency
Impedance
Object detection
Probes
Resonance
Soil
Time domain analysis
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Description
Summary:A simple horizontal dipole over ground can be used as a near-field probe for buried object detection if changes in the dipole impedance produced by the presence of the buried object can be correlated to the characteristics of the object. In this paper, the wideband variation in the input impedance of a horizontal dipole over ground caused by the presence of a nearby underground anomaly (tunnel) is investigated via finite difference time-domain (FDTD) simulation. The correlation of the periodic variation in the dipole impedance difference to the location of the tunnel is demonstrated.
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2009.5172384