And the Russian system is named (the Russian words for) "Global Navigation Satellite System", but usually only called GLONASS because adding L, O and A is less confusing than having one name for super- and sub-sets in a single category.
The fourth global GNSS constellation is Europe's Galileo. NavIC and QZSS are regional GNSS constellations.
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GNSS is just the catch-all term. It stands for "Global Navigation Satellite System".
The Chinese system is called BeiDou.[1]
[1] https://en.wikipedia.org/wiki/Satellite_navigation#BeiDou_(2...
And the Russian system is named (the Russian words for) "Global Navigation Satellite System", but usually only called GLONASS because adding L, O and A is less confusing than having one name for super- and sub-sets in a single category.
The fourth global GNSS constellation is Europe's Galileo. NavIC and QZSS are regional GNSS constellations.