G3 for GLONASS) for civilian use; they feature higher aggregate accuracy and fewer problems with signal reflection. As of late 2018, a few consumer-grade GNSS devices are being sold that use both. They are typically called "Dual-band GNSS" or "Dual-band GPS" devices.

By their roles in the navigation system, systems can be classified as:
* There are four global satellite navigation systems, currently GPS (United States), GLONASS (Russian Federation),