Explore: Navigation Satellites

Satellite navigation (satnav) or satellite positioning is the use of artificial satellites for navigation or geopositioning. A global navigation satellite

Generation (G2G) satellites with Thales Alenia Space and Airbus Defence and Space. The twelve G2G satellites will feature a fully digital navigational payload

A satellite navigation device, also called a satnav device or GPS device, uses satellites of the Global Positioning System (GPS) or similar global navigation

system currently consists of a constellation of eight satellites, with two additional satellites on ground as stand-by. The constellation is in orbit as

regional satellite navigation system containing 16 satellites, including 6 geostationary satellites, 6 inclined geosynchronous orbit satellites, and 4 medium

for each satellite in the constellation, with frames I-IV each describing five satellites, and frame V describing remaining four satellites. The ephemerides

of five satellites and could provide a navigational fix approximately once per hour. In 1967, the U.S. Navy developed the Timation satellite, which proved

(positioning, navigation, and timing) service complements the signals used by the GPS, essentially acting as extra satellites. The QZSS satellites sync their

NNSS (for Navy Navigation Satellite System), was the first satellite navigation system to be used operationally. The radio navigation system was primarily

there are 950 satellites of all types in Earth orbit. It is not possible to identify the exact number of these that are military satellites partly due to