Do aircraft systems really only use GPS and not the full constellation of navigational satellite systems?
Besides GPS, the GNSS currently includes other satellite navigation systems, such as the Russian GLONASS, and may soon include others such as the European Union’s Galileo and China’s Beidou.
Besides GPS, the GNSS currently includes other satellite navigation systems, such as the Russian GLONASS, and may soon include others such as the European Union’s Galileo and China’s Beidou.
https://www.terrisgps.com/gnss-gps-differences-explained/