What is gnss?

GNSS is the abbreviation of Global Navigation Satellite System. Chinese translation should be global navigation satellite system. At present, GNSS includes American GPS, Russian GLONASS, China Compass and European Union Galileo system, and the number of available satellites reaches 100. As early as the mid-1990s, in order to break the monopoly of the United States in the satellite positioning, navigation and timing markets, gain huge market benefits and increase the employment opportunities of Europeans, the European Union has been working on an ambitious civil global navigation satellite system, which is called the Global Navigation Satellite System. The plan is implemented in two steps: the first step is to establish the first generation global navigation satellite system (then called GNSS- 1, later built) which comprehensively utilizes the American GPS system and the Russian GLONASS system; The second step is to establish the second generation global navigation satellite system, namely the Galileo satellite navigation and positioning system under construction, which is completely independent of the American GPS system and the Russian GLONASS system. It can be seen that GNSS is not a single constellation system since it came out, but a comprehensive constellation system including GPS, GLONASS, compass and Galileo. As we all know, satellites orbit the earth in the sky, and its globality is self-evident; Compared with land-based regional navigation, global navigation shows the superiority of satellite navigation.

High-precision measurement GNSS products: Leica, Tianbao and Topcon.