[time-nuts] Trimble Resolution SMT GG weirdness
Daniel Ginsburg
dginsburg at gmail.com
Tue Apr 23 05:49:19 UTC 2013
On 23.04.2013, at 6:15, Hal Murray wrote:
>
>> I wonder, what kind of timing GPS gives 112ns wander?
>
> How good is your antenna? 112 ns is roughly 112 feet. That's not at all
> surprising if your antenna is inside or under trees.
>
Not perfect, but should be reasonably good. It's an external magnetic antenna on my windowsill.
Anyway, +-400ns I'm seeing translates to +-120m in position. My surveyed location is better than this.
> You might watch the number of satellites and/or watch the position while it
> does a survey.
>
6-10 SVs, with PDOP in range 1.6 - 3.9 (about 2.0 most of the time).
>
> --
> These are my opinions. I hate spam.
>
>
>
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