MULTICHANNEL INTERFERENCE MITIGATION TECHNIQUES IN RADIO ASTRONOMY

@article{Leshem2000MULTICHANNELIM,
  title={MULTICHANNEL INTERFERENCE MITIGATION TECHNIQUES IN RADIO ASTRONOMY},
  author={Amir Leshem and Alle Jan Veen and Albert-Jan Boonstra},
  journal={Astrophysical Journal Supplement Series},
  year={2000},
  volume={131},
  pages={355-373}
}
Radio-astronomical observations are increasingly corrupted by radio frequency interference, and on-line detection and filtering algorithms are becoming essential. To facilitate the introduction of such techniques into radio astronomy, we formulate the astronomical problem in an array signal processing language and give an introduction to some elementary algorithms from that field. We consider two topics in detail: interference detection by rank estimation of short-term covariance matrices and… 
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Spatial Filtering of RF Interference in Radio Astronomy Using a Reference Antenna Array
TLDR
This paper considers extending the astronomical array with a reference antenna array, and develops spatial filtering algorithms for this situation, where the information from the reference antennas improves the quality of the interferer signature vector estimation, hence more of the interference can be projected out.
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Radio astronomy forms an interesting application area for array signal processing techniques. Current synthesis imaging telescopes consist of a small number of identical dishes, which track a fixed
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