scholarly journals Fast computation for electromagnetic scattering problems using a heterogeneous multi-core processor

2011 ◽  
Vol 8 (16) ◽  
pp. 1330-1336 ◽  
Author(s):  
Masaki Hirano ◽  
Shinichiro Ohnuki
Keyword(s):  
Electromagnetic Scattering ◽  
Fast Computation ◽  
Scattering Problems ◽  
Multi Core Processor

scholarly journals A Hybrid Approach for Fast Computation of Multiple Incident Angles Electromagnetic Scattering Problems with Compressive Sensing and Adaptive Cross Approximation

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Guo-hua Wang ◽  
Yu-fa Sun
Keyword(s):  
Compressive Sensing ◽  
Electromagnetic Scattering ◽  
Hybrid Approach ◽  
Low Rank ◽  
Fast Computation ◽  
Method Of Moment ◽  
Scattering Problems ◽  
Adaptive Cross Approximation ◽  
Physical Information ◽  
The Right

A hybrid compressive approach for fast computation of the electromagnetic scattering problems with multiple incident angles is proposed. The compressive sensing (CS) technique is firstly introduced to the method of moment (MoM) to reduce the number of the right-hand sides (RHS), but since the resulting excitation matrix contains linear dependency and has low-rank characteristics, the adaptive cross approximation (ACA) algorithm is used to recompress such excitation matrix, keeping only the necessary physical information. The hybrid compressive approach can reduce the number of the RHS to lower level. In fact, the ratio of the number of the RHS between the compressed excitation matrix and the original excitation matrix in the conventional MoM is close to one to fifteen. Numerical results are presented to validate the efficiency and accuracy of this method, which turns out to be highly efficient and accurate for the solution to multiple incident angles electromagnetic scattering problems.

STRONG AND WEAK FORMS OF THE METHOD OF MOMENTS AND THE COUPLED DIPOLE METHOD FOR SCATTERING OF TIME-HARMONIC ELECTROMAGNETIC FIELDS

1992 ◽  
Vol 03 (03) ◽  
pp. 583-603 ◽  
Author(s):  
AKHLESH LAKHTAKIA
Keyword(s):  
Electromagnetic Fields ◽  
Method Of Moments ◽  
Electromagnetic Scattering ◽  
Final Section ◽  
The Other ◽  
Numerical Techniques ◽  
Scattering Problems ◽  
Time Harmonic

Algorithms based on the method of moments (MOM) and the coupled dipole method (CDM) are commonly used to solve electromagnetic scattering problems. In this paper, the strong and the weak forms of both numerical techniques are derived for bianisotropic scatterers. The two techniques are shown to be fully equivalent to each other, thereby defusing claims of superiority often made for the charms of one technique over the other. In the final section, reductions of the algorithms for isotropic dielectric scatterers are explicitly given.

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