Precision Calibration of Radio Interferometers Using Redundant Baselines

Details Precision Calibration of Radio Interferometers Using Redundant Baselines Precision Calibration of Radio Interferometers Using Redundant Baselines

2010-01-29

arxiv.org/abs/1001.5268v3

Mon. Not. R. Astron. Soc. Volume 408, Issue 2, pages 1029-1050, Oct. 2010

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

18 pages, 13 figures; Replaced to match accepted MNRAS version

Scientific paper

10.1111/j.1365-2966.2010.17174.x

Growing interest in 21 cm tomography has led to the design and construction of broadband radio interferometers with low noise, moderate angular resolution, high spectral resolution, and wide fields of view. With characteristics somewhat different from traditional radio instruments, these interferometers may require new calibration techniques in order to reach their design sensitivities. Self-calibration or redundant calibration techniques that allow an instrument to be calibrated off complicated sky emission structures are ideal. In particular, the large number of redundant baselines possessed by these new instruments makes redundant calibration an especially attractive option. In this paper, we explore the errors and biases in existing redundant calibration schemes through simulations, and show how statistical biases can be eliminated. We also develop a general calibration formalism that includes both redundant baseline methods and basic point source calibration methods as special cases, and show how slight deviations from perfect redundancy and coplanarity can be taken into account.

Affiliated with

Also associated with

No associations

Rating

Precision Calibration of Radio Interferometers Using Redundant Baselines 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 Precision Calibration of Radio Interferometers Using Redundant Baselines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precision Calibration of Radio Interferometers Using Redundant Baselines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-251739