On Tue, Feb 22, 2011 at 3:52 PM, Hal Murray <hmur...@megapathdsl.net> wrote:
> A PPS signal from a GPS would provide a nice way to get started, but it needs > a correction for the speed-of-light delay. I don't know if finding that > delay would be easier or harder than traditional methods for getting the > receiver in sync. Even in the best case there you have line of sight how do you know the distance to the transmitter unless you know the location? Then if there is bounces off the ionosphere or "wrong way" paths using the longer of the two great circle paths. It gets very much harder I think GPS can help by using it to control the transmitter and to set the receiver frequencies but the "phase" of the frequency hop clock is determined by the time of flight of the signal, something a receiver can't know in advance -- ===== Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
