GPS analysis system
We use a GPS data analysis system based on the GIPSY software developed at JPL. Most of the GIPSY programs are called by shell scripts written by Jeff Freymueller. Using these scripts, we can analyze a large amount of data either as part of network solutions or in Precise Point Positioning (PPP) mode.
Contents
Where do you put RINEX files?
RINEX files should be put into the hopper, $RAWDATA/hopper. What, you don't have RINEX files yet? See RINEXing. Once files are in the hopper, you can either let the first processing stages happen automatically overnight (see next section), or run the autofront and autoclean programs manually.
What happens automatically?
Autoftp
Autofront
Autoclean
Where do the data files go?
Data files from each station are stored in the QM format that is native to GIPSY. QM files (and all other) files are stored in directories by GPS week. For each week directory there are several subdirectories; qm files are stored in $ANALYSIS/wwww/qm, where wwww is the 4 character GPS week number (with a leading zero if needed).
