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http://dx.doi.org/10.5762/KAIS.2021.22.6.566

A methodology for Identification of an Air Cavity Underground Using its Natural Poles  

Lee, Woojin (Korea Research Institute for defense Technology planning and advancement)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.6, 2021 , pp. 566-572 More about this Journal
Abstract
A methodology for the identification and coordinates estimation of air cavities under urban ground or sandy soil using its natural poles and natural resonant frequencies is presented. The potential of this methodology was analyzed. Simulation models of PEC (Perfect Electric Conductor)s with various shapes and dimensions were developed using an EM (Electromagnetic) simulator. The Cauchy method was applied to the obtained EM scattering response of various objects from EM simulation models. The natural poles of objects corresponding to its instinct characterization were then extracted. Thus, a library of poles can be generated using their natural poles. The generated library of poles provided the possibility of identifying a target by comparing them with the computed natural poles from a target. The simulation models were made assuming that there is an air cavity under urban ground or sandy soil. The response of the desired target was extracted from the electromagnetic wave scattering data from its simulation model. The coordinates of the target were estimated using the time delay of the impulse response (peak of the impulse response) in the time domain. The MP (Matrix Pencil) method was applied to extract the natural poles of a target. Finally, a 0.2-m-diameter spherical air cavity underground could be estimated by comparing both the pole library of the objects and the calculated natural poles and the natural resonant frequency of the target. The computed location (depth) of a target showed an accuracy of approximately 84 to 93%.
Keywords
Cauchy Method; Matrix Pencil Method; Natural Poles; Resonant Frequency; Singularity Expansion Method;
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1 R. S. Adve, T. K. Sarkar, O. M. C. Pereira-Filho, S. M. Rao, "Extrapolation of time-domain responses from three-dimensional conducting objects utilizing the matrix pencil technique", IEEE Transactions on Antennas and Propagation, Vol.45, No.1, pp.147-156, Jan. 1997. DOI: http://dx.doi.org/10.1109/8.554252   DOI
2 W. Lee, T. K. Sarkar, H. Moon, M. Salazar-Palma, "Identification of Multiple Objects Using Their Natural Resonant Frequencies", IEEE Antennas and Wireless Propagation Letters, Vol.12, pp.54-57, Jan. 2013. DOI: http://dx.doi.org/10.1109/LAWP.2013.2237746   DOI
3 J. D. Kraus, Antennas Second Edition Appendix A, p.892, McGraw-Hill, 1988, p.851.
4 M. Farfour, O. Abdellah, F. Al-Shukaili, "Geophysical investigation of underground cavity in Bimah Sinkhole, Northen Oman", Fifth International Conference on Engineering Geophysics, SEG, Al Ain, UAE, pp.203-206, Oct. 2019. DOI: https://doi.org/10.1190/iceg2019-052.1   DOI
5 C. E. Baum, On the Singularity Expansion Method for the Solution of Electromagnetic Interaction problems, Interaction Notes, Air Force Weapons Laboratory, USA, pp.71-109. Available From: http://ece-research.unm.edu/summa/notes/In/0088.pdf
6 J. Yang, T. K. Sarkar, "Interpolation/Extrapolation of Radar Cross-Section (RCS) Data in the Frequency Domain Using the Cauchy Method", IEEE Transactions on Antennas and Propagation, Vol.55, No.10, pp.2844-2851, Oct. 2007. DOI: http://dx.doi.org/10.1109/TAP.2007.904063   DOI
7 D. Ghosh, UWB Antenna Design for Signature Extraction of Buried Targets, Ph.D. dissertation, Department of Electrical Engineering and Computer Science, Syracuse University, NY, USA, pp.107-161, 2008.
8 A. V. Oppenheim, R. W. Schafer, J. R. Buck, Discrete-time Signal Processing Second Edition, p.870, Prentice Hall, 1999, pp.22-34.
9 Y. Zhang, T. K. Sarkar, X. Zhao, D. Garcia-Donoro, W. Zhao, M. Salazar-Palma, S. Ting, Higher Order Basis Based Integral Equation Solver (HOBBIES), p.568, Wiley, 2012, pp.1-442.