FaIMS: A fast algorithm for the inverse medium problem with multiple frequencies and multiple sources for the scalar Helmholtz equation

@article{Chaillat2012FaIMSAF,
  title={FaIMS: A fast algorithm for the inverse medium problem with multiple frequencies and multiple sources for the scalar Helmholtz equation},
  author={St{\'e}phanie Chaillat and George Biros},
  journal={J. Comput. Physics},
  year={2012},
  volume={231},
  pages={4403-4421}
}
We propose an algorithm to compute an approximate singular value decomposition (SVD) of leastsquares operators related to linearized inverse medium problems with multiple events. Such factorizations can be used to accelerate matrix-vector multiplications and to precondition iterative solvers. We describe the algorithm in the context of an inverse scattering… CONTINUE READING