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GPS.md
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HISTORY
**HISTORY**
The Global Positioning System (GPS) is a US-owned utility that provides positioning, navigation, and timing services.
......@@ -8,7 +8,7 @@ In the context of the Cold War, in response to the launch of Sputnik by the Russ
Commercially, GPS has been very successful and has led to numerous developments in a wide range of fields: maritime, land and air navigation, tracking of commercial fleets (boats, aircraft, trucks), route monitoring and tracing, and route relevance assessment. The integration of "GPS chips" in smartphones is increasing the number of domestic and individual uses. In the scientific field, the precision of location and synchronization makes it possible to develop and exploit new applications: geodesy, synchronization between atomic clocks, study of the atmosphere, etc.
SCIENCE
**SCIENCE**
Today the constellation of 30 satellites is composed of different generations (all transmitting the same signals): 7 from the IIR block (1997-2004), 7 from the IIR(M) block (2005-2009), 12 from the IIF block (2010-2016) and 4 from the III block.
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