Performance analysis of clustered radio interferometric calibration

S. Kazemi, S. Yatawatta, S. Zaroubi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Subtraction of compact, bright sources is essential to produce high quality images in radio astronomy. It is recently proposed that 'clustered' calibration can perform better in subtracting fainter background sources. This is due to the fact that the effective power of a source cluster is greater than the power of an individual, weak source therefore enabling better calibration. In this paper, we present performance analysis of clustered calibration and show that, indeed, clustered calibration gives better results compared to un-clustered calibration, which is already seen in the previous work. The use of this analysis enables us to choose the optimal number of clusters for a given observation in an efficient way.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
Pages2533-2536
Number of pages4
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Kyoto, Japan
Duration: 25 Mar 201230 Mar 2012

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

Conference

Conference2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
Country/TerritoryJapan
CityKyoto
Period25/03/1230/03/12

Keywords

  • Calibration
  • Cramer-Rao bounds
  • Estimation
  • Interferometry
  • Radio interferometry

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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