[time-nuts] Survey plot as art.

Andrew Rodland andrew at cleverdomain.org
Mon Jan 16 01:43:46 EST 2017

On Sun, Jan 15, 2017 at 6:23 AM, Andrew Rodland <andrew at cleverdomain.org> wrote:
> 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.

And here is the actual video:
https://www.youtube.com/watch?v=VZHK1c54YRk -- sorry about the


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