Blar i forfatter "Zhong, Yu"

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    • Electromagnetic modeling of damaged fiber-reinforced laminates 

      Liu, Zicheng; Li, Changyou; Zhong, Yu; Lesselier, Dominique (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-15)
      As a prerequisite to nondestructive testing of damaged fibered laminates, the Green's function, corresponding with an undamaged structure, and the electromagnetic fields associated with the damaged one are investigated herein. For the undamaged fibered laminate, benefiting from the periodicity of the fibers within each layer, the field solution follows the scattering-matrix-based method using the ...

    • Learning-Assisted Inversion for Solving Nonlinear Inverse Scattering Problem 

      Xu, Kuiwen; Qian, Zemin; Zhong, Yu; Su, Jiangtao; Gao, Haijun; Li, Wenjun (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-21)
      Solving inverse scattering problems (ISPs) is challenging because of its intrinsic ill-posedness and the nonlinearity. When dealing with highly nonlinear ISPs, i.e., those scatterers with high contrast and/or electrically large size, the traditional iterative nonlinear inversion methods converge slowly and take lots of computation time, even maybe trapped into local wrong solution. To alleviate the ...

    • Multiscaling Differential Contraction Integral Method for Inverse Scattering Problems with Inhomogeneous Media 

      Zhong, Yu; Zardi, Francesco; Salucci, Marco; Oliveri, Giacomo; Massa, Andrea (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-10)
      Practical applications of microwave imaging often require the solution of inverse scattering problems with inhomogeneous backgrounds. Toward this end, a novel inversion strategy, which combines the multiscaling (MS) regularization scheme and the difference contraction integral equation (DCIE) formulation, is proposed. Such an integrated approach mitigates the nonlinearity and the ill-posedness of ...