Summary: This document presents simple methodologies and formalisms, to be used by the Gaia industrial system-level teams, to calculate (i) the end-of-mission astrometric parallax standard error, systematic error, and the bright-star and calibration parallax noise floors; (ii) the end-of-mission photometric standard error; and (iii) the end-of-mission radial-velocity robust formal error.
 

Bibtex entry for this abstract:

@UNPUBLISHED{LL:GAIA-JDB-022,
author = {J.~{de~Bruijne} and M.A.C.~Perryman and L.~Lindegren and others},
title={{G}aia astrometric, photometric, and radial-velocity performance assessment methodologies to be used by the industrial system-level teams},
institution={},
year={2005},
month={June},
url={http://www.rssd.esa.int/doc_fetch.php?id=448635},
note={GAIA-JDB-022},
type={Technical Note}
}