GPS mapping software is smart enough to understand a brief break for tunnels. Bridges & underpasses are not a problem as there are multiple satellites feeding the data all the way across the horizon so you may lose a more overhead signal but not one coming at you from in front or behind. As for accuracy, I'm not sure how much closer you want than the typical 16' which the standard GPS receivers like your phone or Garmin deliver? Since you're traveling rather than static you are giving the mapping software flowing data points to extrapolate against for better accuracy than standing still too.
There's no way a cycle computer could be calibrated that accurately & the margin of error will increase with the mileage. I use Strava combined with a Wahoo Tickr wrist strap as I like to be mix up my HR efforts & I tend to ride too hard. I don't slavishly follow the data but Strave lets you input which bike you rode that day which is a great way of keeping overall mileage records. On Wednesday, March 2, 2022 at 9:46:12 AM UTC-6 George Schick wrote: > Reading through the blog post makes me wonder if anyone has ridden a bike > with a carefully calibrated cycle odometer - maybe using the "roll out" > method to determine accuracy - along with one of these GPS units to see how > accurate the GPS really is. Seems like riding through areas where the sky > is blocked temporarily by tall buildings, underpasses, heavy forestation, > etc. would have to have some effect on overall mileage tracked. Plus, the > run-of-the-mill GPS units that individuals can use, be it a specific device > (Garmin) or a cell phone, aren't as accurate to begin with as the high > quality equipment that people like surveyors use. > > Just curious. I have a friend who will be riding in the Great Cycle > Challenge, a fundraiser for the Children's Cancer Research Fund, again this > year and I've carefully calibrated her cycle computer - which I'm not even > sure she's used - so she can compare the results with the GPS info that the > fundraiser uses to track participant's mileage. > > > On Wednesday, March 2, 2022 at 8:38:52 AM UTC-6 aeroperf wrote: > >> I use a Sigma BC 12.12 Bike Computer, wired, and read it into a >> spreadsheet with the Sigma DataCenter program. >> I bought a bunch of them years ago and calibrate them for each bike on >> the trail I ride. >> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/4d2a7390-8f4b-4d59-b5f7-bc0cb23df9fbn%40googlegroups.com.
