Title :
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
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;
Conference_Titel :
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI
Conference_Location :
Beijing
DOI :
10.1109/URSIGASS.2014.6930040
