Browsing by Subject "Inverse scattering problems"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Electromagnetic imaging of three-dimensional dielectric objects with Newton minimization
    (IEEE, 2014) Etminan, Aslan; Sadeghi, Alireza; Gürel, Levent
    We 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.
  • Thumbnail Image
    ItemOpen Access
    Shape reconstruction of three-dimensional conducting objects via near-field measurements
    (IEEE, 2014) Etminan, Aslan; Gürel, Levent
    A 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.