Resolution of GPR bow-tie antennas

Steven G. Millard; A. Shaari; J. H. Bungey

doi:10.1117/12.462318

12 April 2002 Resolution of GPR bow-tie antennas

Steven G. Millard, A. Shaari, J. H. Bungey

Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462318
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

Bow-tie antennas are often used for investigating subsurface features in concrete structures. It is important that the antenna selected for a survey has suitable detection capabilities and is also physically small enough to be usable within the confines of the structure. It should also be noted that the interaction of the antenna and material under inspection may change the characteristics of the radar signal being transmitted and this may have implications for interpretation ofresults. Higher frequency antennas normally give a better resolution but poorer depth penetration capability to lower frequency antennas. An experimental programme is described in which the resolution capabilities of two commercially available 900MHz & 1GHz antennas are compared in air. Studies are also carried out using an antenna in contact with concrete and the practical results are compared with theoretical predictions of resolution expectation. These results are considered in terms of the practical implications for field-testing using radar

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Steven G. Millard, A. Shaari, and J. H. Bungey "Resolution of GPR bow-tie antennas", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462318

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