How many global navigation systems are there.mini gps tracker

source:Industry News release time:2023-09-08 Hits: Popular:realtime gps tracker online

　　Global navigation satellite system (GNSS), including China's BeiDou navigation satellite system (BDS), the United States' global positioning system (GPS) The Galileo navigation satellite system (Galileo) of the European Union and the GLONASS of Russia. Among them, BDS and GPS have served the world with comparable performance; In terms of functionality, BDS has more regional and global short message functions than GPS. Although GLONASS has been in service worldwide, its performance is slightly inferior to BDS and GPS, and its orbit inclination is relatively large, resulting in poor performance in low latitude areas. Galileo's observation quality is good, but the stability of the onboard clock is slightly poor, resulting in poor system reliability.

　　On July 31, 2020, the Beidou-3 system was officially launched, and the network of Beidou-3 was completed six months in advance. The official opening of the system marked the successful completion of Beidou's "three step" development strategy, and China became the third country in the world to independently own a global satellite navigation system

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