China's BeiDou-3 system is expected to be completed in 2020, with a total of 35 satellites, researchers at a conference on the BeiDou Navigation Satellite System (BDS) said.

 

中国北斗卫星导航系统将于2020年完工，届时共有35颗卫星运行。

 

China has deployed¹ three systems, BDS-1, BDS-2 and BDS-3, to provide accurate positioning and navigation services to the world, said Jin Shuanggen, a researcher at Shanghai Astronomical² Observatory³, Chinese Academy of Sciences, at the second China (Nanjing) BeiDou Satellite Navigation Application Expo and Beidou Summit Forum⁴.

 

"Traditional satellites navigation service is hardly available in the interior of buildings, underground, underwater and other locations. The BDS system provides better accuracy in these locations," Jin said.

 

The BDS system, independently constructed and operated by China, currently has 38 in-orbit satellites including 18 BDS-2 and 20 BDS-3.

 

As a space infrastructure⁵ of national significance, the BDS provides all-time, all-weather and high-accuracy positioning, navigation and timing⁶ services to global users, according to a white paper on the system.

 

"BDS will play a large role as it is used in different scenarios⁷ including smart city, agriculture and meteorology, autopilot, and intelligent transportation," said Jing Guifei, dean of BeiDou Belt and Road School of Beihang University.

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