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      Hybridizing physical optics with MLFMA for efficient scattering computations of three-dimensional complex targets

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      Author
      Manyas, Alp
      Ergül, Özgür
      Gürel, Levent
      Date
      2009-07
      Source Title
      Computational Electromagnetics International Workshop, CEM 2009
      Publisher
      IEEE
      Pages
      69 - 72
      Language
      English
      Type
      Conference Paper
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      Abstract
      The multilevel fast multipole algorithm (MLFMA) provides accurate and efficient solutions of electromagnetic scattering problems involving large and complicated structures. On the other hand, whenever applicable, accelerations provided by approximation techniques can be useful to further improve the efficiency of solutions. In this paper, we present a hybrid technique, which combines the physical-optics (PO) method and MLFMA for efficient scattering computations of three-dimensional objects. We show that, with a careful choice of MLFMA and PO regions on the structure, the number of unknowns can be reduced and solutions can be accelerated significantly, without sacrificing the accuracy. The proposed hybrid technique is easy to implement by modifying existing MLFMA codes. ©2009 IEEE.
      Keywords
      Approximation techniques
      Complex targets
      Complicated structures
      Electromagnetic scattering problem
      Hybrid techniques
      Multilevel fast multipole algorithms
      PO region
      Three-dimensional object
      Electromagnetic wave scattering
      Electromagnetism
      Three dimensional
      Computational efficiency
      Permalink
      http://hdl.handle.net/11693/28700
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/CEM.2009.5228101
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      • Computational Electromagnetics Research Center (BiLCEM) 85
      • Department of Electrical and Electronics Engineering 3524
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