Philip Ray Schaffner wrote:
On Fri, 2007-03-09 at 12:46 +0000, Al Johnson wrote:
...
>
> So *military* devices does it. But not civil.
This is for *civil* devices.
http://pro.magellangps.com/en/products/aboutgps/dgps.asp
http://pro.magellangps.com/en/products/aboutgps/rtk.asp
http://en.wikipedia.org/wiki/Real_Time_Kinematic
Here's a civil device using RTK that "determines the position to centimeter
accuracy within a few seconds at ranges up to 50 km from a reference station"
http://www.leica-geosystems.com/uk/en/lgs_8276.htm
In the UK the Ordnance Survey is making its data available for commercial RTK
networks.
http://www.ordnancesurvey.co.uk/oswebsite/gps/commercialservices/index.html
Very interesting thread. Took the liberty of adding some ideas entitled
"*Cooperative Differential GPS*" related to this to the Summer_of_code
<http://wiki.openmoko.org/wiki/Summer_of_code> Wiki page:
http://wiki.openmoko.org/wiki/Summer_of_code
I can't get to that page for some reason - and am going to sleep.
I expounded on this in some length at the bottom of Hardware:GPSD - if
you haven't seen that, it may be of use.
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