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Conference Paper: Time-domain scattering in 2 1/2 dimensions

TitleTime-domain scattering in 2 1/2 dimensions
Authors
Issue Date1990
Citation
Ieee Antennas And Propagation Society, Ap-S International Symposium (Digest), 1990, v. 1, p. 22-25 How to Cite?
AbstractA finite-difference time-domain (FDTD) method is used to solve the problem of the response of an arbitrary source, in particular, an impulsive point source, in a two-dimensional isotropic inhomogeneous medium. The field is three-dimensional, whereas the inhomogeneity is two-dimensional; hence, this is called a 2-1/2-dimensional problem. Taking advantage of the invariance of the geometry in one dimension, cosine and sine transforms are used to eliminate one of the spatial derivatives in Maxwell's equations, thereby reducing the problem to two dimensions. A rectangular staggered grid is used to discretize the equations. The complete solution is obtained by linearly superimposing several transformed field components. This provides great savings in terms of computer storage and run time over a three-dimensional FDTD method. The subsurface interface radar, in which an impulsive transmitter and an accompanying receiver are used to detect reflections from subsurface objects, is discussed as an example. Effects of increasing conductivity and depth of the buried objects on the quality of the measured signals are studied.
Persistent Identifierhttp://hdl.handle.net/10722/182816
ISSN

 

DC FieldValueLanguage
dc.contributor.authorMoghaddam, Men_US
dc.contributor.authorYannakakis, Een_US
dc.contributor.authorChew, WCen_US
dc.date.accessioned2013-05-02T05:17:11Z-
dc.date.available2013-05-02T05:17:11Z-
dc.date.issued1990en_US
dc.identifier.citationIeee Antennas And Propagation Society, Ap-S International Symposium (Digest), 1990, v. 1, p. 22-25en_US
dc.identifier.issn0272-4693en_US
dc.identifier.urihttp://hdl.handle.net/10722/182816-
dc.description.abstractA finite-difference time-domain (FDTD) method is used to solve the problem of the response of an arbitrary source, in particular, an impulsive point source, in a two-dimensional isotropic inhomogeneous medium. The field is three-dimensional, whereas the inhomogeneity is two-dimensional; hence, this is called a 2-1/2-dimensional problem. Taking advantage of the invariance of the geometry in one dimension, cosine and sine transforms are used to eliminate one of the spatial derivatives in Maxwell's equations, thereby reducing the problem to two dimensions. A rectangular staggered grid is used to discretize the equations. The complete solution is obtained by linearly superimposing several transformed field components. This provides great savings in terms of computer storage and run time over a three-dimensional FDTD method. The subsurface interface radar, in which an impulsive transmitter and an accompanying receiver are used to detect reflections from subsurface objects, is discussed as an example. Effects of increasing conductivity and depth of the buried objects on the quality of the measured signals are studied.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)en_US
dc.titleTime-domain scattering in 2 1/2 dimensionsen_US
dc.typeConference_Paperen_US
dc.identifier.emailChew, WC: wcchew@hku.hken_US
dc.identifier.authorityChew, WC=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0025549952en_US
dc.identifier.volume1en_US
dc.identifier.spage22en_US
dc.identifier.epage25en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridMoghaddam, M=7004934627en_US
dc.identifier.scopusauthoridYannakakis, E=6506077215en_US
dc.identifier.scopusauthoridChew, WC=36014436300en_US

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