An Inverse Fast Multipole Method for Imaging Applications

  title={An Inverse Fast Multipole Method for Imaging Applications},
  author={Yu. Alvarez and Jose A. Martinez and Fernando Las-Heras and C. M. Rappaport},
  journal={IEEE Antennas and Wireless Propagation Letters},
An inverse fast multipole method (FMM) for imaging applications is presented. The goal is the acceleration of an inverse source-based method for geometry reconstruction achieved by taking advantage of the multipole expansion properties of the scattered fields and reconstructed equivalent currents. By conjugating the FMM terms, it is possible to recover the equivalent currents from the scattered fields in just one step rather than using matrix inversion or cost function minimization. For the… CONTINUE READING
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