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[01391] Defect reconstruction in waveguides using resonant frequencies

  • Session Time & Room : 1E (Aug.21, 17:40-19:20) @D405
  • Type : Contributed Talk
  • Abstract : This talk aims at introducing a new multi-frequency method to reconstruct width defects in waveguides. Different inverse methods already exist, but those methods are not using some frequencies, called resonant frequencies, where propagation equations are known to be ill-conditioned. Since waves seem very sensible to defects at these particular frequencies, we exploit them instead. Given partial wavefield measurements, we reconstruct slowly varying width defects in a stable way and provide numerical comparisons with existing methods.
  • Classification : 78A46, 35B34
  • Format : Talk at Waseda University
  • Author(s) :
    • Angèle Niclas (CMAP - École Polytechnique )