On Mon, Jan 12, 2015 at 03:10:39PM +0100, Attila Kinali wrote: > The GNSS Timing AppNote for the LEA6-T receiver[1] will give you an idea > what jitter you get with GPS. Please be aware that these measurements > were done with an antenna located at a _good_ position (ontop of a 4 story > building with no other high buildings around). Unless you have a simlarly > good location you will have worse performance.
Ciao Attila. By the way, I see there are LEA-6T from Hong Kong at 49 USD shipping included. If those are not a fake and I can extract the PPS from them, do you suggest this as the best GPS for the price actually available for timing? > It would average out if and only if the sawtooth correction would be > completely > independent of anything else. But it isn't. This results in effects where the > cycle to cycle jitter is quite low, but there is a large offset in the > sawtooth > correction. This is know as "hanging bridges" in the GNSS world. I can use the sawtooth correction with LEA-6T but if I am using it with a normal TIC I should obtain a way either to apply the correction in hardware, or to capture the numbers and postprocess them together with data from the TIC. Probably the simple solution is a GPSDO where everything is already done? Best regards, Andrea Baldoni _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
