Appendix: Calibration Principles

An ``ideal'' interferometer samples the Fourier transform of the sky
brightness multiplied by the antenna beam pattern; these samples are
called **visibilities**. In practice, because of noise,
imperfections, sampling, and other effects, several terms perturb the
visibilities to produce the true output of a ``real''
interferometer. The goal of the calibration is to identify and
estimate all the important instrumental and atmospheric effects and
apply appropriate corrections to recover the true visibilities.

- Standard Decomposition of Visibilities
- Baseline versus Antenna based calibration
- Plateau de Bure Online Calibration
- Offline Calibration; the rules of the game

Gildas manager 2014-07-01