Uncertainty analysis of the specific absorption rate induced in a phantom using a stochastic spectral collocation method

  • Ouanès Aiouaz
  • David Lautru
  • Man-Fai Wong
  • Emmanuelle Conil
  • Azeddine Gati
  • Joe Wiart
  • Victor Fouad Hanna
Article

Abstract

Uncertainty analysis of human exposure to radio waves is studied with a spectral approach of stochastic collocation methods. This approach allows determining in an efficient way the statistical moments of the output variable, the specific absorption rate, with respect to uncertain input parameters. Polynomial chaos expansions are used for the random output, and the spectral coefficients are determined by projection or regression. These techniques are used with an electromagnetic solver based on a finite difference time domain scheme. The convergence of the statistical moments is analyzed for two case studies. Global sensitivity is also analyzed for the uncertain position of a cellular phone in the close vicinity of a human head model.

Keywords

Uncertainty Stochastic collocation methods FDTD Specific absorption rate (SAR) Sensitivity 

Copyright information

© Institut Télécom and Springer-Verlag 2011

Authors and Affiliations

  • Ouanès Aiouaz
    • 1
  • David Lautru
    • 2
  • Man-Fai Wong
    • 1
  • Emmanuelle Conil
    • 1
  • Azeddine Gati
    • 1
  • Joe Wiart
    • 1
  • Victor Fouad Hanna
    • 2
  1. 1.WHIST Lab common lab of Orange Labs R&D and Institut TelecomIssy-les-MoulineauxFrance
  2. 2.UPMC, Univ. Paris 06, UR2, L2E, BC252ParisFrance

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