[time-nuts] question about Thunderbolt geo acuracy

[bg at lysator.liu.se]

Attilla,

> On Thu, 10 May 2012 22:50:15 +1000
> swingbyte <swingbyte at exemail.com.au> wrote:
>
>> Hope this isn't too chat roomy, however, I have need of a survey precise
>> geolocation type gps.  I was wondering if the precise timing abilities
>> extend to its precision in position output?  I have a thunderbolt and
>> one of those conical white aerials from china and would like to know if
>> this combination will give me accurate height data.
>
> How fast do you need it?
>
> One project i'm involved with uses a LEA6-T with its phase data output
> and averaging over several hours to get x/y resolutions in the 2-4mm
> range.
> I'm quite sure you can do something similar with altitude as well.
>
> 			Attila Kinali

That is relative positions over a baseline of ca 100m. Not absolute
positions.

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     Björn