I really like gLAB software, it is an educational open software developed by the European Space Agency in collaboration with the Technical University of Catalunya. You can find it here:
http://www.gage.es/gLAB
They also wrote a book about GNSS with examples you can illustrate by using that software. The book can be found here:
http://www.navipedia.net/index.php/GNSS:Tools
Moreover, if you are looking for high accurate positioning, you can use the RTKLIB, which is probably the most well known and powerful open software to process GNSS data.
please, I can not figure out, how to add RINEX navigation files for multiple systems into gLab. Or how to mix individual navigation files (..n, ..g, ..l, ..c) into mixed navigation file (..p). Any advice would be welcome.
Mohomed Mafaz for academic porpoises you can use first class GAMIT/GLOBK software. It is not only free but also open source (MIT licence ?, not sure) should be noted not suitable for real time application.
GNSS rinex data processing done with RTKLib software. RTKLIB is free and open source software with a graphical user interface running on Windows and Linux. It's written in C, freely available from http://www.rtklib.com/
GPS Precise Analysis Software GpsTools: Overview was develop by the same author of RTKLIB (Prof. Tomoji Takasu), but it's written in MATLAB (mixed with compiled C programs). http://gpspp.sakura.ne.jp/gpstools/help/gpstools.htm
I'm an archaeology student and I'm about to attend a lab to learn how to process GPS data. I was told to download RTKLIB, but I'm a Mac user and it didn't work. How can i fix the problem? May I use gLAB as a substitute? I still don't know what kind of exercises we are going to do. Thanks in advance,
Hi Mohomed Mafaz , the tools mentioned (RTKlib and gLAB) are nice and user friendly. But the selection depend on what you need to do with the tool. For example, both software do not consider block processing, hence for some applications they are not suitable. In any case, you can find a list of available software at https://www.ngs.noaa.gov/gps-toolbox