LOFAR calibration challenges

Details LOFAR calibration challenges LOFAR calibration challenges

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5489..817n&link_type=abstract

Ground-based Telescopes. Edited by Oschmann, Jacobus M., Jr. Proceedings of the SPIE, Volume 5489, pp. 817-825 (2004).

Computer Science

22

Scientific paper

The LOw Frequency ARray (LOFAR will observe at 20-200 MHz. At those frequencies, large ionospheric phase variations distort the observed brightness distribution. Fortunately, the imahe may be stabilized for long integrations by using bright radio sources in the sky. The downside is that LOFAR fields will be very crowded, which presents calibration challenges of its own. This is especially true for the bright and extended sources that enter via the relatively high sidelobes of the LOFAR station beams. An extra complication is that these beamshapes vary rather strongly in frequency and time. Altogether, LOFAR will require much more processing than existing radio telescopes, and has only just become possible with the new generation of computers. Even so, new processing techniques like 'peeling' had to be developed to speed things up by several orders of magnitude.

Affiliated with

Also associated with

No associations

Rating

LOFAR calibration challenges does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with LOFAR calibration challenges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LOFAR calibration challenges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1808635