Global Positioning System : Tofauti kati ya masahihisho

* [http://www.apecgit.org/ Asia-Pacific Economic Cooperation (APEC) GNSS Implementation Team]

 

* [http://rhp.detmich.com/gps.html GPS and GLONASS Simulation] ([[Java applet]]) Simulation and graphical depiction of the motion of space vehicles, including Dilution of precision (GPS) computation.

* [http://northsurveying.com/index.php/soporte/gnss-and-geodesy-concepts GPS, GNSS, Geodesy and Navigation Concepts in depth]