[time-nuts] Galileo service currently degraded

[Michael Wouters]

We  monitor GNSS timing in this way ie with common, single-frequency
receivers configured to track a single GNSS system only, measured with
respect to UTC(AUS). The plan was to make the data publicly available
but that's still on the TODO. Currently we monitor GPS, GLONASS and
BeiDou.

Over the two years or so we've been doing this, I've noticed multiple
problems with receiver loss of tracking, even when many SVs  are
visible and useable, and lockups when tracking non-GPS signals. I
attribute this to bugs in the receiver firmware, rather than the GNSS.

There is of course a vast amount of data available already through the
many IGS stations reporting multi-GNSS data, just not in a convenient
form.

Cheers
Michael