Possibly Dumb GNSS Timing Question [SOLVED]

[Alex_Landherr]

I have a question about using GNSS receivers for timing and disciplining clocks on and near Earth’s surface.

Most (if not all) GNSS receivers have some PPS output in addition to its serial data output to my understanding.
The PPS gives us the start of a second and the serial data says which second as I’ve come to understand it.

My question then is if the information received includes enough data to compensate for the signal delay from the satellite such that I don’t get this:

Code: Select all

correct time + signal delay = wrong apparent time to receiver

This might seem trivial but all I’ve found are explanations that aren’t very good at explaining to novices in this particular part of GNSS knowledge.

[jdb]

The GPS time sync takes into account satellite ephemeris, i.e. where the atomic clock actually is in space. The receiver uses this to estimate distance/time correction, and the synchronisation of the GPS symbol stream aligns the local clock to the satellite clock.

[Alex_Landherr]

Ok, thanks!
I did find this repo for setting the system time on a Pi whilst to my understanding not turning the Pi into an NTP server:
PPS-Client