Abstract
In this article, the rational function approximation technique (RFAT) is applied to the hybrid finite-element/boundary-integral/multilevel fast multipole algorithm (FE/BI/MLFMA) to acquire wide-band and wide-angle backscatter radar-cross-section (RCS) by complex targets. The two approaches of using the rational function approximation technique, asymptotic waveform evaluation (AWE) and model-based parameter estimation (MBPE), both have been investigated and compared by theoretical analysis and numerical experiments. The numerical results acquired by the developed computing algorithm of integrating the hybrid FE/BI/MLFMA with the RFAT are presented in the article, demonstrating that the rational function approximation technique can greatly speed up the hybrid FE/BI/MLFMA to acquire wide-band and wide-angle backscatter RCS by complex targets.
Original language | English |
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Pages (from-to) | 521-532 |
Number of pages | 12 |
Journal | International Journal of RF and Microwave Computer-Aided Engineering |
Volume | 17 |
Issue number | 6 |
DOIs | |
Publication status | Published - Nov 2007 |
Keywords
- Asymptotic waveform evaluation (AWE)
- Electromagnetic scattering
- Hybrid FE/BI/MLFMA
- Model-based parameter estimation (MBPE)
- Rational function approximation