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      Interpolation techniques to improve the accuracy of the plane wave excitations in the finite difference time domain method 

      Oğuz, U.; Gürel, Levent (Wiley-Blackwell Publishing, Inc., 1997-11)
      The importance of matching the phase velocity of the incident plane wave to the numerical phase velocity imposed by the numerical dispersion of the three-dimensional (3-D) finite difference time domain (FDTD) grid is ...
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      Electromagnetic scattering solution of conducting strips in layered media using the fast multipole method 

      Gürel, Levent; Aksun, M. I. (Institute of Electrical and Electronics Engineers, 1996-08)
      The fast multipole method (FMM) is applied to the solution of the electromagnetic scattering problems in layered media for the first time. This is achieved by using closed-form expressions for the spatial-domain Green's ...
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      Fast algorithm for scattering from planar arrays of conducting patches 

      Gürel, Levent; Chew, W. C. (Institute of Electrical and Electronics Engineers, 1998-04)
      A direct (noniterative) algorithm for the solution of the electromagnetic scattering from three-dimensional planar arrays of conducting patches is developed. For an N-unknown problem, the computational complexity of this ...
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      Application of signal-processing techniques to dipole excitations in the finite-difference time-domain method 

      Oğuz, U.; Gürel, Levent (Taylor & Francis, 2002)
      The applications of discrete-time signal-processing techniques, such as windowing and filtering for the purpose of implementing accurate excitation schemes in the finite-difference time-domain (FDTD) method are demonstrated. ...
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      Transmitter-receiver-transmitter-configured ground-penetrating radars over randomly heterogeneous ground models 

      Gürel, Levent; Oğuz, U. (Wiley-Blackwell Publishing, Inc., 2002)
      Ground-penetrating radar (GPR) problems are simulated using the finite-difference time-domain (FDTD) method. The GPR model is configured with arbitrarily polarized three antennas, two of which are transmitting antennas fed ...
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      Three-dimensional FDTD modeling of a ground-penetrating radar 

      Gürel, Levent; Oğuz, U. (IEEE, 2000)
      The finite-difference time-domain (FDTD) method is used to simulate three-dimensional (3-D) geometries of realistic ground-penetrating radar (GPR) scenarios. The radar unit is modeled with two transmitters and a receiver ...
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      An efficient and accurate technique for the incident-wave excitations in the FDTD method 

      Oğuz, U.; Gürel, Levent; Arıkan, Orhan (Institute of Electrical and Electronics Engineers, 1998-06)
      An efficient technique to improve the accuracy of the finite-difference time-domain (FDTD) solutions employing incident-wave excitations is developed. In the separate-field formulation of the FDTD method, any incident wave ...
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      Optimization of the transmitter-receiver separation in the ground-penetrating radar 

      Gürel, Levent; Oğuz, U. (IEEE, 2003-03)
      The finite-difference time-domain method is applied to simulate three-dimensional subsurface-scattering problems, involving a ground-penetrating-radar (GPR) model consisting of two transmitters and a receiver. The receiving ...
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      Singularity of the magnetic-field integral equation and its extraction 

      Gürel, Levent; Ergül, Özgür (Institute of Electrical and Electronics Engineers, 2005)
      In the solution of the magnetic-field integral equation (MFIE) by the method of moments (MOM) on planar triangula-tions, singularities arise both in the inner integrals on the basis functions and also in the outer integrals ...
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      Reducing the dispersion errors of the finite-difference time-domain method for multifrequency plane-wave excitations 

      Oğuz, U.; Gürel, Levent (Taylor & Francis, 2003)
      We demonstrate the applications of discrete-time signal-processing (SP) techniques for the purpose of generating accurate plane waves in the finite-difference time-domain (FDTD) method. The SP techniques are used either ...
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      Gürel, Levent (151)
      Ergül, Özgür (79)Malas, Tahir (17)Oğuz, U. (11)Malas, T. (6)Ünal, Alper (6)Manyas, Alp (5)Chew, W. C. (4)Ergül O. (4)Oğuz, Uğur (4)... View MoreKeywordsIntegral equations (56)Electromagnetic wave scattering (29)Electromagnetic scattering (26)Computational electromagnetics (23)Algorithms (21)Multilevel fast multipole algorithm (21)Computer simulation (20)Electromagnetism (20)Iterative methods (19)Multi-level fast multi-pole algorithm (18)... View MoreDate Issued2010 - 2014 (39)2000 - 2009 (97)1996 - 1999 (15)Has File(s)Yes (151)

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