[Talk-GB] accurate GPS

ael witwall3 at disroot.org
Wed Oct 9 11:07:54 UTC 2019


On Wed, Oct 09, 2019 at 11:49:35AM +0100, Russ Garrett wrote:
> On Wed, 9 Oct 2019 at 11:40, Andy Robinson <ajrlists at gmail.com> wrote:
> > Are you using trig points that are also OS Net station locations? https://www.ordnancesurvey.co.uk/legacy/docs/gps/OSNet_GPSWebSite_Coordinates_File.txt
> 
> Pretty sure that all those OS Net locations are actually fixed GPS
> receivers rather than trig points, and so not something you can go and
> plonk your GPS receiver on. The file definitely seems to list the
> model of receiver at each one.

I have visited and mapped a few of the passive stations which are
usually small pillars a few cm high. Most (all?) are now "legacy"
but they ought to be much more accurate than the much older trig
points.

ael




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