May I suggest to turn the 24 hours reset period into a parameter?
On Fri, Jan 13, 2017 at 8:45 PM, Tom Van Baak <[email protected]> wrote: > Mark, Ole, > > Yes, averaging can both enhance precision but also destroy information. In > many cases too much data is a bad thing. The solution is to add another > dimension to the plot. Stable32 does this with DAVAR (dynamic Allan > variance). TimeLab has a multi- "trace" feature. Both of these break large > data sets into smaller ones and display each in succession. This way you get > the best of both worlds; precision without long-term pollution and also a > view of long-term trends. Yes, there's an art to picking the right > parameters, but you get the idea. In some cases it is highly informative. The > color 3D DAVAR plots in particular can be a thing of beauty. > > So, in your case, save each of those 24 hour GIF's and then turn then into a > single animated GIF. That way not only do you get a fresh view of current > reception conditions, but also a time lapse view of changes over the > long-term. > > Another idea is to somehow 2D transform your polar plots into a horizontal > rectangular strip and then use elapsed time in the vertical. This would allow > a waterfall-style representation of GPS reception over time. > > /tvb > > ----- Original Message ----- > From: "Mark Sims" <[email protected]> > To: <[email protected]> > Sent: Friday, January 13, 2017 11:03 AM > Subject: [time-nuts] Thermal effects on cables --> ADEV > > >>I recently made a change in Lady Heather's satellite signal maps to help with >>a very similar issue. Before, the maps were based upon the accumulated >>average value of the sat signals at each point in the sky. Now, every 24 >>hours, the signal level averages are reset to their current average and the >>sample counts are reset to 1. That way any change is your antenna >>performance won't be masked by days/week/months of previous data. >> >> ---------------- >> >>> Don't use years worth of data. >> Otherwise it could be days before the xDEV visually changes > > _______________________________________________ > 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.
