✘Unicore UM621

[Gary E. Miller]

Yo All!

I have a new, to me, Unicore UM621 GNSS receiver.  It does L1 and L5.
It's slightly idiosyncratic NMEA now works with gosd git head.  I'm not
sure the Unicore bnary is worth supporting.

Attached is a 12 hour scatter plot, it has a CEP(50) of 1.799m.  Not
bad, but not as good as the Allystar 1202's 1m.

I also fed the UM621 some RTCM3 for 2 hours to generate the second
scatter plot.  Now the CEP(50 goes to 1.193m.  Still not as good as the
standalone Allystar.

The nice feature of the UM621 is the included 6-axis IMU that outputs
NMEA at 10Hz.  gpsd decodes that now.  Not bad for $20.


RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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