We are a survey firm, run a P4 RTK and use it primarily for topography and ortho tiles to aid in drafting. (we’ve never had any luck having the orthomosaic image to work).
What we’ve found is the RTK allows very good correlation between images and proper rotation but as would be expected it is shifted about 3’ from a State plane Grid localization and even more vertically. The easy fix it would seem is simply to use a single GPC to shift the array and move it vertically. As it seems the software requires a minimum of three GCPs my question is how to create MTPs, apply the same datum shift to them and use them as GCPs so as to prevent any scaling as in our experiences causes ghosting of the imagery on smaller sites.
Currently on small (>5ac) we process on straight through steps 1-3 to get the imagery, then process again with GCPs to get the contour data.
Of course any workflow other than my thinking is welcome!