ALS calibration: Analytic expressions for the antenna gains of a two and three element east-west interferometer

Author

Grobler, T.L. ; Smirnov, O.M. ; Nunhokee, C.D.

Author_Institution

Dept. of Phys. & Electron., Rhodes Univ., Grahamstown, South Africa

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

Studying a simple problem first, for which an analytic solution exists, can greatly improve our understanding of a complex problem. An undesired result of calibrating with an incomplete sky model is calibration systematics. Studying the systematics contained in the antenna gains of a simple east-west interferometer could aid us in understanding the artefacts associated with calibration in general. This paper aims to derive analytic expressions of the antenna gain vectors that were obtained during the calibration (using an incomplete sky model) of a two and three element east-west interferometer.

Keywords

antennas; calibration; least squares approximations; radiowave interferometers; ALS calibration; alternating least squares calibration; analytic expressions; antenna gain vectors; calibration systematics; incomplete sky model; three element east-west interferometer; two element east-west interferometer; Antennas; Calibration; Eigenvalues and eigenfunctions; Equations; Mathematical model; Radio astronomy; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6930040

Filename

6930040