Hi, While being very close geographically, with all the benefits that gives to common view aspects, I think GPS/GNSS two-way methods will not be reasonable on their own to achieve precision within handful ps.
Sub-ns takes quite an effort, and the close proximity might help to push it a little down, but getting it that low I guesstimate as difficult/impossible. I would say you would need another system for that. If you can use fiber, have a look at White Rabbit. Cheers, Magnus On 2019-12-04 10:40, mar...@ptsyst.com wrote: > Hello, > > > > I'm always being asked to provide equipment that can produce two 1 pps > outputs aligned to each other to within a few ps. > > > > These two 1 pps pulses are not in the same location and could be 100 metres > to a few km away. > > > > So they are asking for two of my GNSS frequency standards with 1 pps > outputs. > > > > The 1 pps outputs being derived from the rubidium oscillator (which is > aligned to GPS/GNSS) > > > > The best I think I can achieve is in the low ns range. > > > > Does anyone know how this can be achieved? > > > > Regards > > > > Martyn > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.