[dis-sys]

wondering is there any upper bound on the error, e.g. is it possible to ever have a timing error of say 100 microsecond seconds.

[adgjlsfhk1]

that would correspond to a 30 km error

[dis-sys]

yes, 1m for every 3.3ns error, we all know that.

the problem is those GPS vendors only provide long term average error for their products, there is upper bound guarantee at all.