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Analysis of Microwave Inverse Scattering Using the Broadband Electromagnetic Waves  

Lee Jung-Hoon (Department of Communication Engineering, MyongJi University)
Chung Young-Seek (Department of Communication Engineering, MyongJi University)
So Joon-Ho (TRC 2nd Division, Agency for Defense Development)
Kim Junyeon (TRC 2nd Division, Agency for Defense Development)
Jang Won (TRC 2nd Division, Agency for Defense Development)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.17, no.2, 2006 , pp. 158-164 More about this Journal
Abstract
In this paper, we proposed a new algorithm of the inverse scattering for the reconstruction of unknown dielectric scatterers using the finite-difference time-domain method and the design sensitivity analysis. We introduced the design sensitivity analysis based on the gradient information for the fast convergence of the reconstruction. By introducing the adjoint variable method for the efficient calculation, we derived the adjoint variable equation. As an optimal algorithm, we used the steepest descent method and reconstructed the dielectric targets using the iterative estimation. To verify our algorithm, we will show the numerical examples for the two-dimensional $TM^2$ cases.
Keywords
Inverse Scattering; FDTD; Design Sensitivity; Optimization;
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