Global Positioning System in Twilight 2000

[Claidheamh]

Would the GPS network still work by the year 2000?

Of course EMP would play havoc with many GPS receivers, which would kill a lot of its value, but my limited understanding of EMP is that it doesn't propagate well in vacuum, so the satellites would still work. Anti-Satellite weapons will definitely have been used throughout 1997, but I believe that the GPS satellites are in geosynchronous orbit, well above the orbit of most LEO craft that would have been attacked by ASAT weapons.

An acquaintance told me about timing issues between satellites that requires a ground broadcast station to give offset details for receivers, but I assume that if that's offline, the accuracy of the GPS system gets worse, but it wouldn't disable the system.

I don't have an actual plan for using GPS in an upcoming campaign, but I have been noodling around with this question.