In-mid 2015, China started the build-up of the third generation BeiDou system (BDS-3) in the global coverage constellation. The first BDS-3 satellite was launched 30 September 2015. As of March 2016, 4 BDS-3 in-orbit validation satellites have been launched.
In - mid 2015 , China started the build - up of the third generation BeiDou system ( BDS-3 ) in the global coverage constellation . The first BDS-3 satellite was launched 30 September 2015 . As of March 2016 , 4 BDS-3 in - orbit validation satellites have been launched .
When did China begin constructing the third BeiDou system?
When did China begin constructing the third BeiDou system ?
mid 2015
mid 2015