Hi –
I’m using two RS+ to survey GCPs for a structure-from-motion survey. I’m having issues getting good PPK results for our base station on two of our three survey days.
My workflow is as follows (based on an excellent guide I found here: https://documents.cast.uark.edu/emlidreach/Guide3.html):
- Download log from base station (RINEX 3.03).
- Download CORS data for the same time period from National Geodetic Survey - User Friendly CORS v4.0
- Download .clk data from https://cddis.nasa.gov/archive/gnss/products/
- Run rtkpost with the base station as a rover and the CORS station as the base station.
I am unable to get anything better than a Single solution (Q=5). My suspicion is that the baseline is too long (this particular site is right between two CORS stations), but I wanted to see if anyone else had ideas. I’ve messed around with the satellite angle in the settings and changed the SNR mask, both of which made the solution worse. I’ve put a .zip with my .obs and .nav files, the .clk file, the .21o file from the CORS station, and the .sp3 file here: Base Data
Thanks in advance for any insight!
Kristin