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Journal of the Korean Institute of Electromagnetic and Science 2003;3(1):57-61.
Parametric Inverse Scattering for Lossless Dispersive Media with Enhanced Robustness
Hyoung-Jin Park, Sang-Seol Lee
Division of Electronic and Computer Engineering, Hanyang University
Abstract
The effects of high frequency noises on a perturbational inversion technique for a stratified dispersive medium are investigated in this paper. It is shown that the perturbational solution becomes unstable under high frequency noises. The physical origin of this instability is described. In order to enhance the robustness of the perturbational inverse scattering solution, a parametric inversion technique is introduced. The examples for the 2-pole and the 3-pole reflection coefficients are compared and contrasted, and improvement of the robustness of the solutions is shown.
Key words: Perturbational Inversion, Parametric Inversion, Robustness, Dispersive Medium, Riccati Equation
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