"Ghosts in the image" - aliasing problems with incoherent synthetic aperture using a sparse array

@article{HoffmannKuhnt2004GhostsIT,
  title={"Ghosts in the image" - aliasing problems with incoherent synthetic aperture using a sparse array},
  author={Matthias Hoffmann-Kuhnt and M. A. Chitre and J. Potter},
  journal={Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600)},
  year={2004},
  volume={2},
  pages={621-625 Vol.2}
}
Traditionally, imaging of ensonified objects is done by beamforming using a fully populated receiver array. When a sparse array is used, grating lobes appear and this is not longer possible. The grating lobe problem can be solved by using a broadband signal: here the grating lobes for different frequencies are in different locations and thus average out… CONTINUE READING