Improving the GPR Detectability Using a Novel Loop Bowtie Antenna

• Autorzy: Ajith K. K. , Bhattacharya A.

Identyfikatory

DOI

10.26636/jtit.2017.120917

• Języki publikacji: EN

Abstrakty

EN

The Ground Penetrating Radar (GPR) technique finds immense applications in civil engineering today, as the most suitable approach for non-destructive testing of pavements, highways, concrete structures, and more. The major challenge in carrying out a GPR evaluation is that the properties of the probed medium are usually unknown. The permittivity and conductivity of the medium may vary from those of air to water. The electromagnetic waves also have a frequency dependent attenuation. The ability of GPR to detect signals reflected and scattered by the targets largely depends upon the antenna performance. This paper studies a novel 11:1 wideband loop bowtie antenna with very good radiation properties in the entire operating bandwidth. Synthetic and experimental results are presented for the return loss and gain of the antenna. Furthermore, experimental results are presented for the radiation patterns in the E- and H-plane. We also used the antenna to measure B-scans over two different pipes, a bamboo, and a reinforced concrete structure. All results obtained with the proposed antenna have been compared with results obtained by using a RC loaded antenna. It has been found that the loop bowtie antenna has excellent detection capability and produces less clutter. The loop loading technique can be applied to existing antennas for improved GPR imaging. This will improve the detectability of GPR by improving the target return signal.

Słowa kluczowe

EN

antenna; Ground Penetrating Radar; imaging; UHF; UWB

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2017
• Tom: nr 3
• Strony: 9--16
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Ajith K. K.

• Department of Electronics & Electrical Comm. Eng., Indian Institute of Technology Kharagpur, India

autor

Bhattacharya A.

• Department of ETC, International Institute of Information Technology Bhubaneswar, India

Bibliografia

• [1] A. Benedetto and L. Pajewski, Eds., Civil Engineering Applications of Ground Penetrating Radar. Book Series: “Springer Transactions in Civil and Environmental Engineering”. Springer International Publishing Switzerland, 2015.
• [2] C. W. Chang, C. H. Lin, and H. S. Lien, “Measurement radius of reinforcing steel bar in concrete using digital image GPR”, Constr. and Build. Mater., vol. 23, no. 2, pp. 1057–1063, 2009.
• [3] S. Hong, W. W.-L. Lai, G. Wilsch, R. Helmerich, R. Helmerich, T. Günther, and H. Wiggenhauser, “Periodic mapping of reinforcement corrosion in intrusive chloride contaminated concrete with GPR”, Constr. and Build. Mater., vol. 66, pp. 671–684, 2014.
• [4] C. J. Vaughan, “Ground Penetrating Radar surveys used in archaeological investigations”, Geophys., vol. 51, no. 3, pp. 595–604, 1986.
• [5] T. Montoya and G. Smith, “Land mine detection using a groundpenetrating radar based on resistively loaded Vee dipoles”, IEEE Trans. on Antenn. and Propag., vol. 47, no. 12, pp. 1795–1806, 1999.
• [6] H. M. Jol, Ground Penetrating Radar Theory and Applications. Elsevier Science, 2008.
• [7] A. Lestari, A. Yarovoy, and L. Ligthart, “RC-loaded bow-tie antenna for improved pulse radiation”, IEEE Trans. on Antenn. and Propag., vol. 52, no. 10, pp. 2555–2563, 2004.
• [8] A. A. Lestari, A. G. Yarovoy, and L. P. Ligthart, “Adaptive wire bow-tie antenna for GPR applications”, IEEE Trans. on Antenn. and Propag., vol. 53, no. 5, pp. 1745–1754, 2005.
• [9] A. A. Lestari, E. Bharata, A. B. Suksmono, A. Kurniawan, A. G. Yarovoy, and L. P. Ligthart, “A modified bow-tie antenna for improved pulse radiation”, IEEE Trans. on Antenn. and Propag., vol. 58, no. 7, pp. 2184–2192, 2010.
• [10] K. K. Ajith and A. Bhattacharya, “Printed compact lens antenna for UHF band applications”, Progress in Electromag. Res. C, vol. 62, pp. 11–22, 2016.
• [11] K. K. Ajith and A. Bhattacharya, “Improving the detectability and imaging capability of ground penetrating radar using novel antenna concepts”, in EGU General Assembly Conference Abstracts, ser. EGU General Assembly Conference Abstracts, vol. 19, Apr. 2017, p. 7562.
• [12] C. A. Balanis, Antenna Theory: Analysis and Design. Hoboken, NJ: Wiley, 2005.
• [13] D. J. Daniels, Ed., Ground Penetrating Radar. The Institution of Engineering and Technology, Michael Faraday House, Six HillsWay, Stevenage SG1 2AY, UK: IET, Jan 2004.