I want to perform static post-processing of ground control points using RTKLIB, an AS-ANT2BCAL and appropriate ANTEX files.
Where on the antenna should I measure the antenna height above the control point? Is it the base of the antenna or the center ring?
The antenna reference point is at the center, at the bottom of the thread. There’s a drawing in the NGS website, in the page where you can download the calibration file.