Hi If you are looking at doing a self survey on a timing module, there is a lot of information in the archives. It turns out that (like it or not) there is very likely to be a ~24 hour periodicity in your self survey data. Therefor something like a two, three, or four day survey will enhance your position estimate.
Again - for all get gory details dig into the archives. Since the timing is done against the module’s “best estimate” of it’s position, there isn’t a lot of benefit in having a surveyed correct position instead. More or less, the same errors that goofed the position also goof the timing in the same direction. Again, info in the archives. Bob > On Apr 30, 2018, at 2:41 PM, Achim Gratz <[email protected]> wrote: > > Tim Lister writes: >> It has taken me quite a bit longer that I had hoped but I have finally >> published a writeup and howto of collecting raw ublox data, converting >> it to RINEX and how to do (or get the NRC experts to do) the >> post-processing. It's at a new website I have setup: >> https://adventuresinprecision.space/howtos/precise-gps-positions/ >> Please let me know any comments or suggestions you have to improve it >> or make it more comprehensible and comprehensive. > > Thanks for taking the time to write that up. Out of curiosity, how far > away from the RINEX coordinates is an RMS or median of the original > coordinates as recorded by the GPS and how does the convergence curve > look like? I'm trying to gauge how long I need to run my timing module > in survey mode… > > > Regards, > Achim. > -- > +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ > > Wavetables for the Waldorf Blofeld: > http://Synth.Stromeko.net/Downloads.html#BlofeldUserWavetables > _______________________________________________ > 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. _______________________________________________ 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.
