gnacad -antex igs20.atx -list -type TRM59800.00 A text table of North, East, Up offsets (L1/L2) plus PCV values per elevation.
GNACAD is a niche but powerful software tool used primarily to visualize, analyze, and format antenna calibration data, specifically for files from the calibration system. It is the industry standard for handling Antenna Exchange Format (ANTEX) files, which contain the absolute phase center variations (PCV) for GNSS antennas. gnacad tutorial pdf
gnacad -in calibration.N4 -format geo++ -out custom.ATX -format antex Use -list on the output to verify headers. Task 3: Compare Two Antennas Before a field campaign, you might compare your rover antenna ( LEIAR25) against a reference ( JAV_RINGANT ). gnacad -antex igs20