GRTs to Regional Servers
What: GRTs should monitor the offset between their
station clock and a time standard (ideally GPS).
This monitoring should be undertaken both during and between VSOP
observations - at least weekly - to allow the station clock
drift to be accurately modelled.
How: The format for these files is given in
http://www.nfra.nl/reduce/describe/vlbi/GPS_prog_jdr.html .
The preferred file naming convention is
GPS.xx, where xx is the 2-letter code for the GRT.
When: Files will be updated at least weekly.
Where: Files are placed by GRTs on their regional server (§10.2.10) in the sub-directory named for the month and year (e.g. may97) below the sub-directory named gps. For DSN telescopes the files will be placed on the DSN FTP site (see §10.1) in directory /pub/vlbiscpr.