Accuracy: the the point

[igor.vereninov]

Here is a good topic about Reach precision:

Good end results and comparison

We did some basic ground tests yesterday and got some very good results. Basically we placed over 20 control markers over a site 2km by 5km. We surveyed these points with a Leica GPS1200 survey grade instrument. The initial measurement was to our local NTRIP basestation for a good relative coordinate to base our survey on and then applied that shift for our RTK base. This is a tried and proven methodology that we have been using for some 10 years now. The coordinate quality for all points did n…

If you setup a base station at an unknown point you will get accurate relative position, but to get accurate absolute position you will need to define the base coordinates.