SurveyorConnect land,
Do you know where to get GNSS observation data sample? I'm doing my own research to compare couple of software for GPS/GNSS network processing, but I don't have enough resource for field work.
your comment will be much appreciate.
You can download RINEX data files from the US NGS site at: CORS Data Products- National Geodetic Survey
Or do you want raw GPS receiver data?
Don't some CORS include GLONASS? I think that http://www.oregon.gov/ODOT/HWY/theorgn/Pages/Glonass.aspx&apos ;">some of the ORGN sites also do.
The IGS has an experimental program called MGEX that archives GNSS data, currently including GPS, GLONASS, Galileo, and BeiDou, in RINEX format:
There are quite a few participating stations, so you should be able to pick a subset, download, and process. Precise orbits and clocks and biases are available. Of course you can then compare your coordinates and uncertainties with the "official" processed results.
i did not notice this earlier.
Have you viewed: http://www.ngs.noaa.gov/gps-toolbox/Mohino.htm
This is the GPS simulated observation generator. Description on page is pretty clear.
Good luck,
DMM