The forward–backward method with a novel spectral acceleration algorithm (FB/NSA) for the computation of scattering from two-dimensional large-scale impedance random rough surfaces
✍ Scribed by D. Torrungrueng; Joel T. Johnson
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 151 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0895-2477
- DOI
- 10.1002/mop.1141
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✦ Synopsis
Abstract
The forward–backward method with a novel spectral acceleration algorithm (FB/NSA) has been shown to be a very efficient 𝒪(N~tot~) iterative method of moments, where N~tot~ is the total number of unknowns to be solved, for the computation of electromagnetic wave scattering from two‐dimensional (2‐D) perfectly conducting rough surfaces. In this paper, the method is extended to treat impedance rough surfaces. It is found that the 2‐D NSA algorithm for the impedance case is similar to the one for the perfectly conducting case. Comparisons of numerical results between the standard 2‐D FB and 2‐D FB/NSA methods show that the latter yields very accurate results with an appreciable reduction of CPU time. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 232–236, 2001.