Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..395..382w&link_type=abstract
Frontiers of Astrophysics: A Celebration of NRAO's 50th Anniversary ASP Conference Series, Vol. 395, Proceedings of the conferen
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
Future radio telescopes such as the Square Kilometer Array (SKA) present us with a number of unprecedented challenges. To select a design that will be able to achieve the SKA requirements, we need good models of the instrument and the observed sky. This makes detailed SKA simulations a vital part of any design effort. The Measurement Equation (ME) that grew out of aips++ development provides a succinct mathematical framework in which a radio telescope and the observed sky may be described. The MeqTrees software package, originally developed at ASTRON for the purpose of calibrating the Low-Frequency Array (LOFAR), provides a flexible software system for implementing MEs of arbitrary structure and complexity, and for solving for arbitrary subsets of their parameters. This poster will examine how the ME and MeqTrees can be applied to SKA simulations. In particular we simulate an SKA pathfinder consisting of small dishes with phased-array focal-plane arrays mounted at the primary focus, and show some of the instrumental effects expected and their impact on observations.
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