Therefore, it was in 1989 that the first Block II satellites were launched. In addition, the United States launched their 24th Navstar satellite into orbit in the summer of 1993.
That completed the modern GPS constellation of satellites. Which consists of a network of 24 satellites officially known today as the Global Positioning System, or GPS.
From all the 24 satellites, 21 were active at all times and the other 3 satellites were spares. But, it was declared as fully operational in 1995.
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Today, the GPS network has roughly 30 active satellites in the constellation of the GPS.
And, it is used for many navigation applications. Such as route finding, map-making, earthquake research, climate studies, as well as some outdoor games.
Difference Between GPS and Glonass
Since we already tackled GPS, now you probably ask yourself what is GLONASS?
So, GLONASS is an acronym and it stands for Globalnaya Navigazionnaya Sputnikovaya Sistema. Which means, Global Navigation Satellite System. It is the Russian GPS-like system.
