GPS TDOP

[Gary E. Miller]

Yo Richard!

On Fri, 22 Nov 2019 23:09:17 -0600
Richard Laager via devel <devel at ntpsec.org> wrote:

> The NTPviz output says, "TDOP is a dimensionless error factor. TDOP
> ranges from 1 to greater than 20. 1 denotes the highest possible
> confidence level. 2 to 5 is good."
> 
> I routinely have TDOP values below 1, which this text implies is
> impossible:
> https://ntp2.wiktel.com/day/index.html#local_gps

I changed the wording to this:

    <p>TDOP is a dimensionless error factor.  Smaller numbers are better.
    TDOP ranges from 1 (ideal), 2 to 5 (good), to greater than 20 (poor).
    Some GNSS receivers report TDOP less than one which is theoretically
    impossible.</p>

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at 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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