http://en.wikipedia.org/wiki/GLONASS#Accuracy http://en.wikipedia.org/wiki/GLONASS#Accuracy There are already chips that combine the results from GPS and GLONA

http://en.wikipedia.org/wiki/GLONASS#Accuracy http://en.wikipedia.org/wiki/GLONASS#Accuracy There are already chips that combine the results from GPS and GLONASS. Because it moves from 31 satellites to about 50, time to get a fix is improved (since it might see 4 GPS satellites and 2 GLONASS ones more easily) and accuracy is better.