Improving Radio Astronomy Images by Array Processing Algorithms
Many-array classic beamformer Classic beamformer image
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ASSC
Abell 2256 LOFAR
Terrestrial Interference

Terrestrial interference of one milion (106)

  • Image of 6 point sources.
  • A strong out of FOV interfering source with intensity stronger by 106(a milion) than sources in the image.
  • The classic dirty image is useless due to the interferer sidelobes.
  • The ASSC obtains clear image of the point sources.

Classic dirty image
Image
ASSC dirty image
Image
Original image
Image
Simulation Conditions:
  • East-West array.
  • Observation was done every 6 minuets for a 12-hour period.
  • Each array contains 20 antennas with half the wavelength spaced.




Contact Information

Email: ronny.levanda@gmail.com
Tel: +972-54-654-5564
Fax: +972-57-794-7527