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All of the satellites? What could possible cause all of them to fail at the same time? It's not hardware because they weren't all switched at the same time. Software?
Common frequency. Someones blocking them?
Earlier quoted context omitted.
What makes a frequency easy to jam?
>The frequency initially chosen for Galileo would have made it impossible for the US to block the Galileo signals without also interfering with its own GPS signals. Not an answer to your question but it was more about being able to jam GNSS while still being able to use GPS.
Since the website itself is not working, here is gsc-europa's own dashboard: https://www.gsc-europa.eu/system-status/Constellation-Inform... This is the specific incident: https://www.gsc-europa.eu/notice-advisory-to-galileo-users-n... Seems to have started 2019-07-11 14:45 (UTC) so a couple of days ago. Apparently, they used to have failures with the clocks ( https://en.wikipedia.org/wiki/Galileo_(satellite_navigati…
> Apparently, they used to have failures with the clocks That would explain if a few of them were weird, but the report said "SATELLITE AFFECTED: ALL" which would be quite a coincidence if each clock on each satellite failed at the same time.
> Guenter Hein, Professor Emeritus of Excellence at the University FAF Munich told us, “As far as I know, it is a problem of the PTF [Precise Timing Facility] in Italy – time has an impact on the whole constellation!”
There was a recent study [1] looking into the economic impact of GPS in the US which "estimate that the loss of GPS service would have a $1 billion per-day impact". Not sure how that translates to Galileo GNSS. [1] https://www.rti.org/sites/default/files/gps_finalreport.pdf
So there isn't really a case of GPS failing while Galileo works and viceversa, it's just "everything fails" vs "something works".
All of the satellites? What could possible cause all of them to fail at the same time? It's not hardware because they weren't all switched at the same time. Software?
Satellites are just part of the GNSS system. There are multiple control centers and network of sensor , uplink, telemetry, tracking and control stations around the world. The problem is most likely on the ground. When GNSS satellites are not getting updated data from the ground stations their accuracy starts to degrade.
Wow! I've been having some issues navigating whilst driving with Google Maps and Strava for running these last few days. I assumed the issue was my smartphone, but I am curious to know if the issue was, in fact, due to the Galileo issues listed.