Re:Hybrid receivers? (Score 1)

There are hybrid GPS/GLONASS receivers already, actually GPS/GLONASS/GALILEO. http://www.topconpositioning.com/ Laica and Trimble have GPS/GLONASS. But for use in a GPS with a street map or something like that? I doubt it will be worth it, the increase in precession doesn't matter much for that, for professional use it's worth it, especially since you have a better chance of always having enough satellites around.