Richard B. Gilbert wrote:
very high quality. In particular, GPS sends a pulse per second and one edge of that pulse is accurate to about +/- 50ns. The rest of the GPS signal tells you which second is being marked by the specified edge, leading or trailing (I've forgotten which).
GPS doesn't do this. In fact GPS relies on the fact that there are significant time "errors" between the times received from different satellites. It uses pseudo random ranging codes, not single pulses.
Some GPS receivers, synthesize a pulse on the one second mark from their solution for the time.
_______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
