Hi Well … since you asked …. ummm… F9P:
Run a second type of receiver ( Furuno GT-87 maybe) Measure it Sawtooth correct it Compare corrected receiver A to corrected receiver B Sure am glad that I’m too far away to be hit by that rock that just got tossed my way :) Bob > On Feb 15, 2019, at 2:33 PM, Mark Sims <[email protected]> wrote: > > I am adding the ability to Lady Heather to apply receiver sawtooth correction > values to measured PPS values... this requires having a receiver that outputs > sawtooth values as the main input device and connecting a TICC/counter > measuring the receiver PPS output as an auxiliary input device. > > There are six different ways of calculating the corrected PPS value: > add/subtract the previous/current/next sawtooth value from the measured PPS > value. The combination that works properly depends upon the receiver and > counter. It is easy to find the correct combination by trying each one and > seeing which one produces the "best" results ("best" being determined by > which one had the lowest corrected PPS span, average, sdev, variance, etc). > > For all the receivers that I have tested there is only one combination that > jumps out as being the correct one. However, for the new Ublox F9P, there > are two combinations that produce virtually identical measurements and > statistics (add current sawtooth or subtract previous sawtooth). Any ideas > on how to determine which combination is the "correct" one? > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
