A Long March-3B rocket carrying a new-generation Beidou satellite lifts off from the Xichang Satellite Launch Center in Xichang, southwest China’s Sichuan Province, 30 September 2015. China’s new-generation satellite will support its global navigation and positioning network, it is the 20th satellite for the Beidou Navigation Satellite System (BDS), and will challenge the current U.S. operated Global Positioning System (GPS).