On Sat, Jan 7, 2017 at 12:54 PM, Peter Reilley <preilley_...@comcast.net> wrote: > > This is the survey from my Trimble NTBW50AA. It looks like some bacteria > floating around.
Relatedly, and just for fun, here's a video I made several years ago from a few days worth of constellation status data out of a cheap SiRF receiver. It's interesting to see how the satellite geometry changes over time... or maybe it's just fun to watch the pretty colors. If you're observant you can also get an idea for where the tall trees were at my old apartment and maybe my approximate latitude. The projection is stereographic from the nadir (I think), with 90° elevation at the center, 0° elevation at the edges, and north up. The "wiggles" near the edges are due to the granularity of the positions from the receiver (half-degree, IIRC). Points are drawn with size and brightness proportional to the log signal strength, and the trails fade out exponentially. Andrew _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
