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Beidou upgrades for global reach

Xichang, Sichuan Province,China- ( November 6th, 2017 ) - Two third-generation Beidou satellites with ultra-accurate rubidium atomic clocks on board,were lofted atop a Long March 3B carrier rocket from Xichang Satellite Launch Center in Sichuan province on Sunday night and were placed in medium Earth orbit thousands of kilometers above the Earth. 

According to the China Satellite Navigation Office, they will be function for at least 12 years and have greatly improved the accuracy. China has begun to upgrade Beidou Navigation Satellite System with global-coverage capabilities through the launch of new satellites.

Beidou is the world's fourth navigation satellite system, following GPS in the United States, GLONASS in Russia and Galileo in the European Union.