Astron. Astrophys. Suppl. Ser.
Volume 126, Number 2, December I 1997
|Page(s)||379 - 383|
|Published online||15 December 1997|
Calculating quantization correction formulae for digital correlators with digital fringe rotation
CSIRO, Australia Telescope National Facility, PO Box 76, Epping, 2121, Australia
Accepted: 28 March 1997
A method for calculating the conversion relationship between measured digital correlation and true analogue correlation, for digital correlators incorporating digital fringe rotation, is presented. Explicit expressions for the efficiency of correlators of this type are derived which can be used to optimise correlator system parameters. Results are presented for four correlation schemes in common use.
Key words: instrumentation: spectrographs / instrumentation: interferometers
© European Southern Observatory (ESO), 1997