Speaking in terms of quality it is not sufficient to measure as precisely as possible. You also have to demonstrate that the equipment used is traceable down to well-known and accepted standards. How can that be achieved in terms of global satellite positioning?
Well, I used my measurement equipment in connection with my personal continously operated reference station and the GNSS test point located at Zaberfeld Stausee Ehmetsklinge, with a distance of 8.868,88 meters from my garage. The position of this reference point was certified by Vermessungsamt Heilbronn.
Here are the results of my measurements:
|North Latitude||Eastern length||Ellipsoid height|
|Certified Value||49,058346944°||8,9124975°||292,21 m|