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Basics on Setting up GPS [New Surveyor]
Just got my R8s Base/Rover combo and i need some help setting up and start experimenting.
-First off, in cases where i know the Grid and projection of my current project, there is no need for localisation right?
Also, is localization and ground calibration the same thing? Here it says it is, but here it says its another thing.
-Ok so imagine this. I just took the rover on the roof of a building to have a clear view of the sky. I set Grid/projection/units and geoid and took a peek on Grid coordinates. It wasnt a benchmark so there was no testing the accuracy of the solution, and also i hadnt connect to a base or network RTK, it was an SDGPS autonomous solution. But i immediately noticed something weird. The Elevation was –22m. I was close to the Sea but i was looking something more llike +15 or +20m. Isnt 40m elevation error way off, even for an autonomous solution. I was tracking 13 sats by the way.
So would you say this was the solution not getting corrections, an incorrect geoid file or the fact that the unit was not perfectly level?
BTW how can i check if i have a localised geoid? I live on Greece and EGM2008 is used. I used EGM96 Global instead though.
-An unrelated question is, if i do static, or base/rover RTK do i need to track SBAS? Or is there any reason for SBAS?
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