Fast generalized forward-backward method by using a spectral acceleration

@article{Pino1999FastGF,
  title={Fast generalized forward-backward method by using a spectral acceleration},
  author={M. de Gouveia Dal Pino and R. J. Burkholder and Fernando Obelleiro},
  journal={IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)},
  year={1999},
  volume={2},
  pages={1410-1413 vol.2}
}
The generalized forward backward (GFB) method is a generalisation of the previous forward-backward (FB) method to compute the electromagnetic scattering from targets on ocean-like rough surfaces. In this paper, the spectral acceleration algorithm introduced by Chou and Johnson for the FB method is adapted to the GFB. This reduces the computational cost of the GFB from O(N/sup 2/) to O(N) per iteration.