Hello time-nuts, I've been thinking about a GPS receiver experiment and just wondering if there are any opinions or prior experience that might save me a lot of time.
What I have been thinking about doing is taking a GPS receiver (Novatel OEM4-G2) that has provisions for an external clock (5 or 10 MHz) and driving it with a rubidium oscillator (that has 1pps disciplining, (such as the X72 v5.05 or SRS PRS-10). The GPS even has settings for OCXO/rubidium/cesium dynamics. Then, (and here is the unknown part) what if the GPS receiver 1pps is used to discipline the rubidium? This basically forms a feedback loop, so could either hurt or help - depending. Supposedly the better oscillator would give a better GPS solution. And the better solution (1pps) should provide a better oscillator frequency. We know that GPS receivers using asynchronous clocks have 1pps errors and hanging bridges (OEM4 is spec'd at 20ns rms), If the oscillator is on 10MHz and disciplined will the 1pps error be reduced such as the Thunderbolt? Comments appreciated. Regards, Skip Withrow _______________________________________________ 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.