Author/Authors :
Patrick S.M. Dougherty، نويسنده , , P.E. Dewdney، نويسنده , , B. Carlson، نويسنده , , A.R. Taylor، نويسنده , , W.K. Scott، نويسنده , , D.A. Del Rizzo، نويسنده , , W.T. Petrachenko، نويسنده , , T. Burgess، نويسنده , , W.H. Cannon، نويسنده , , Edward G. Feil، نويسنده , , B. Feir، نويسنده , , P.S. Newby، نويسنده , , A. Novikov، نويسنده ,
Abstract :
The Canadian contribution to the VSOP Space VLBI mission is based on the S2 recording system, a correlation centre, and a data analysis and archive centre. The S2 record/playback terminals are a low cost and reliable means for recording VLBI data and are presently distributed worldwide at 17 observatories involved in the VSOP mission. The Canadian S2 correlator is a lag-based correlator, designed specifically to handle Space VLBI signal processing. Fringe de-rotation and delay compensation are station-based, and the correlatorʹs 24576 lag channels can be distributed in a variety of ways to accommodate both continuum and spectral line observations. Unique design features include a station-based zoom filter for high spectral resolution, multiple pulsar gates, and a fast dump capability (1 kHz), principally used for pulsar observations. Subsequent data analysis and archiving are carried out to provide feed-back to the mission on data quality.
