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

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....

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Bibliographic Details
Published in:Annales des télécommunications 2011-08, Vol.66 (7 - 8), p.409-418
Main Authors: Aiouaz, Ouanes, Lautru, David, Wong, Man-Faï, Conil, Emmanuelle, Gati, Azeddine, Wiart, Joe, Fouad Hanna, Victor
Format: Article
Language:English
Subjects:
Electromagnetism
Engineering Sciences
Online Access:Get full text
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Summary: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.
ISSN:0003-4347
1958-9395
DOI:10.1007/s12243-011-0255-x