<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>This is a feature. ANTENNA DELTA eccentricities are from the survey marker to the antenna reference point (ARP, normally the bottom of the antenna) -- that's because of the antenna mount in your case. PCV ANTEX offsets are from the ARP to the antenna phase center (APC, normally inside the body of the antenna) -- it varies with the antenna model. The intended usage is so that the marker coordinates won't change if you mix and match different antenna mounts and antenna models. </div><div>-F.</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hello everyone,<br>
I'm using the post-processing module RTKPOST of RTKLib software (ver. 2.4.2, patch 11) with dual frequency GNSS RINEX files, and I noticed a small problem regarding the settings of the base station coordinates in static<br>
mode.<br>
<br>
In the "Positions" > "Base Station" window, when I select the "RINEX Header Position" coordinates (that in my files are the precise coordinates of the base station in ETRS89 reference system), the software sums these two RINEX fields: "APPROX POSITION XYZ" + "ANTENNA: DELTA H/E/N"<br>
<br>
Unfortunately, if I also use antenna PCV ANTEX files, the "ANTENNA: DELTA H/E/N" values are added again during the processing, so my final rover position has an offset equal to the "ANTENNA: DELTA H/E/N" values.<br>
<br>
Since usually the "ANTENNA: DELTA H/E/N" values are equal to zero, this problem is difficult to be found. But our antennas have a small offset (few cms) due to a SCIGN leveling mount like this one:<br>
<a href="https://www.unavco.org/projects/project-support/gnss-support/permanent-station/equipment/mounts/scignmount.html" rel="noreferrer" target="_blank">https://www.unavco.org/projects/project-support/gnss-support/permanent-station/equipment/mounts/scignmount.html</a><br>
<br>
The solution of my problem is to manually insert the XYZ coordinates of the base station. But I find very useful the "RINEX Header position" option...<br>
<br>
Did I do something wrong?<br>
Do you have the same problem?<br>
<br>
If you confirm my problem, I will wrote to the software developer to report the bug.<br>
<br></blockquote><div><br></div></div></div></div>