In-mid 2015, China started the build-up of the third generation BeiDou system (<answer>BDS-3</answer>) in the global coverage constellation. The first <answer>BDS-3</answer> satellite was launched 30 September 2015. As of March 2016, 4 <answer>BDS-3</answer> in-orbit validation satellites have been launched.
What is the third BeiDou system called?
BDS-3