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Article: Numerical modeling of an enhanced very early time electromagnetic (VETEM) prototype system

TitleNumerical modeling of an enhanced very early time electromagnetic (VETEM) prototype system
Authors
Issue Date2000
Citation
Ieee Antennas And Propagation Magazine, 2000, v. 42 n. 2, p. 17-27 How to Cite?
AbstractIn this paper, two numerical models are presented to simulate an enhanced very early time electromagnetic (VETEM) prototype system, which is used for buried-object detection and environmental problems. Usually, the VETEM system contains a transmitting loop antenna and a receiving loop antenna, which run on a lossy ground to detect buried objects. In the first numerical model, the loop antennas are accurately analyzed using the Method of Moments (MoM) for wire antennas above or buried in lossy ground. Then, Conjugate Gradient (CG) methods, with the use of the fast Fourier transform (FFT) or MoM, are applied to investigate the scattering from buried objects. Reflected and scattered magnetic fields are evaluated at the receiving loop to calculate the output electric current. However, the working frequency for the VETEM system is usually low and, hence, two magnetic dipoles are used to replace the transmitter and receiver in the second numerical model. Comparing these two models, the second one is simple, but only valid for low frequency or small loops, while the first modeling is more general. In this paper, all computations are performed in the frequency domain, and the FFT is used to obtain the time-domain responses. Numerical examples show that simulation results from these two models fit very well when the frequency ranges from 10 kHz to 10 MHz, and both results are close to the measured data.
Persistent Identifierhttp://hdl.handle.net/10722/182629
ISSN
2015 Impact Factor: 0.896
2015 SCImago Journal Rankings: 1.016
References

 

DC FieldValueLanguage
dc.contributor.authorCui, TJen_US
dc.contributor.authorChew, WCen_US
dc.contributor.authorAydiner, AAen_US
dc.contributor.authorWright, DLen_US
dc.contributor.authorSmith, DVen_US
dc.contributor.authorAbraham, JDen_US
dc.date.accessioned2013-05-02T05:16:11Z-
dc.date.available2013-05-02T05:16:11Z-
dc.date.issued2000en_US
dc.identifier.citationIeee Antennas And Propagation Magazine, 2000, v. 42 n. 2, p. 17-27en_US
dc.identifier.issn1045-9243en_US
dc.identifier.urihttp://hdl.handle.net/10722/182629-
dc.description.abstractIn this paper, two numerical models are presented to simulate an enhanced very early time electromagnetic (VETEM) prototype system, which is used for buried-object detection and environmental problems. Usually, the VETEM system contains a transmitting loop antenna and a receiving loop antenna, which run on a lossy ground to detect buried objects. In the first numerical model, the loop antennas are accurately analyzed using the Method of Moments (MoM) for wire antennas above or buried in lossy ground. Then, Conjugate Gradient (CG) methods, with the use of the fast Fourier transform (FFT) or MoM, are applied to investigate the scattering from buried objects. Reflected and scattered magnetic fields are evaluated at the receiving loop to calculate the output electric current. However, the working frequency for the VETEM system is usually low and, hence, two magnetic dipoles are used to replace the transmitter and receiver in the second numerical model. Comparing these two models, the second one is simple, but only valid for low frequency or small loops, while the first modeling is more general. In this paper, all computations are performed in the frequency domain, and the FFT is used to obtain the time-domain responses. Numerical examples show that simulation results from these two models fit very well when the frequency ranges from 10 kHz to 10 MHz, and both results are close to the measured data.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Antennas and Propagation Magazineen_US
dc.titleNumerical modeling of an enhanced very early time electromagnetic (VETEM) prototype systemen_US
dc.typeArticleen_US
dc.identifier.emailChew, WC: wcchew@hku.hken_US
dc.identifier.authorityChew, WC=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/74.842122en_US
dc.identifier.scopuseid_2-s2.0-0033738112en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033738112&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume42en_US
dc.identifier.issue2en_US
dc.identifier.spage17en_US
dc.identifier.epage27en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridCui, TJ=7103095470en_US
dc.identifier.scopusauthoridChew, WC=36014436300en_US
dc.identifier.scopusauthoridAydiner, AA=7004153439en_US
dc.identifier.scopusauthoridWright, DL=14053113300en_US
dc.identifier.scopusauthoridSmith, DV=35614716500en_US
dc.identifier.scopusauthoridAbraham, JD=7201618546en_US

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