GLONASS is a Russian satellite navigation system operating as part of a radionavigation-satellite service. It provides an alternative to Global Positioning System (GPS) and is the second navigational system in operation with global coverage and of comparable precision.
A combined GLONASS/GPS receiver, ruggedised for the Russian military, 2003
A combined GLONASS/GPS Personal Radio Beacon
The Glonass-K spacecraft model
A GLONASS receiver module 1K-181
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system (GNSS). As of 2023, five global systems are operational: the United States's Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), India's Indian Regional Navigation Satellite System (IRNSS), China's BeiDou Navigation Satellite System (BDS), and the European Union's Galileo.
The U.S. Space Force's Global Positioning System was the first global satellite navigation system and the first to be provided as a free global service.
Launched GNSS satellites 1978 to 2014