Browsing by Subject "Inverse scattering problems"
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Item Open Access Electromagnetic imaging of three-dimensional dielectric objects with Newton minimization(IEEE, 2014) Etminan, Aslan; Sadeghi, Alireza; Gürel, LeventWe present a general framework for detecting the shape and electrical properties of unknown objects by using the Newton minimization approach for solving inverse-scattering problems. This procedure is performed by evolving an initial-guess object iteratively until the cost function decreases to a desired value. Rapid convergence of this method is demonstrated by some numerical results.Item Open Access Shape reconstruction of three-dimensional conducting objects via near-field measurements(IEEE, 2014) Etminan, Aslan; Gürel, LeventA general framework for the shape reconstruction of conducting objects is presented with the Newton minimization approach. Using a fully numerical method, the initial-guess object is evolved to reconstruct the target. The object is modeled by triangles such that the vertices are the unknowns of the inverse-scattering problem. The cost function is minimized as the evolving object converges to the actual target in merely tens of iterations.